Quick Answer
The answer is a pie chart and a stacked bar chart. Both chart types are specifically designed to show the proportion of total, meaning they visually represent how individual parts contribute to a whole, with the entire chart representing 100% of the data. A pie chart uses slices to show each category’s share, while a stacked bar chart uses segments within a single bar to display the same proportional breakdown, making them ideal for comparing the relative size of each product category against total sales. On the CompTIA Data+ DA0-001 exam, this question tests your ability to match chart types to analytical goals, often appearing in the “Data Visualization” domain. A common trap is confusing a stacked bar with a clustered bar, which compares separate groups rather than parts of a whole. For a quick memory tip, remember that both charts answer “what share of the pie?”—if you need to see how each piece fits into the full 100%, think pie or stack.
This DA0-001 practice question tests your understanding of visualizing data. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO chart types are best suited to show the proportion of total sales contributed by each product category? (Select exactly two.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Histogram
Why wrong: Histograms show distribution of a single variable.
Scatter plot
Why wrong: Scatter plots show relationships between variables.
Stacked bar chart
Stacked bars show composition across categories.
Pie chart
Pie charts clearly show parts of a whole.
Line chart
Why wrong: Line charts show trends over time, not proportions.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Stacked bar chart
Options B and C are correct. Pie charts and stacked bar charts effectively show parts of a whole. Line charts show trends; scatter plots show relationships; histograms show distributions.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Histogram
Why it's wrong here
Histograms show distribution of a single variable.
Scatter plot
Why it's wrong here
Scatter plots show relationships between variables.
Stacked bar chart
Why this is correct
Stacked bars show composition across categories.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Pie chart
Why this is correct
Pie charts clearly show parts of a whole.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Line chart
Why it's wrong here
Line charts show trends over time, not proportions.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
Histograms show distribution of a single variable.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which DA0-001 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Visualizing Data — study guide chapter
Learn the concepts, then practise the questions
Visualizing Data practice questions
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FAQ
Visualizing Data — This question tests Visualizing Data — Read the scenario before looking for a memorised answer..
The correct answer is: Stacked bar chart — Options B and C are correct. Pie charts and stacked bar charts effectively show parts of a whole. Line charts show trends; scatter plots show relationships; histograms show distributions.
Identify which DA0-001 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This DA0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-001 exam.
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