SALESFORCE-PD1 User Interface Practice Question
A developer is building a Lightning Web Component and wants to define a property that can be set by a parent component. Which decorator is required?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
@api
The @api decorator exposes a public property or method, making it accessible to parent components.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
@track
Why it's wrong here
Incorrect because @track is for local reactive object/array mutations (though modern LWC tracks primitives automatically, @track is not for public exposure).
- ✓
@api
Why this is correct
Correct because @api exposes public properties to parent components.
- ✗
@auraEnabled
Why it's wrong here
Incorrect because @auraEnabled is for Apex methods.
- ✗
@wire
Why it's wrong here
Incorrect because @wire is for provisioning data from adapter services.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 practice question is part of Courseiva's free Salesforce 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 SALESFORCE-PD1 exam.