An app builder at Universal Containers has been asked to add the Chatter feed to a custom object record page. Which approach should the app builder…

The Lightning App Builder provides a set of standard components for building record pages. To display the Chatter feed for a specific record, the app builder should use the standard "Chatter" component. This component is designed to be dragged onto the Lightning record page canvas, automatically displaying the relevant feed, publisher, and posts for the record being viewed. This is the standard, declarative method for this requirement.

B. Add the standard related list component: The Chatter feed is an interactive, dynamic component, not a simple list of related records. The related list component is used for objects that have a lookup relationship.

C. Add a custom Chatter feed component: Building a custom component is unnecessary and inefficient, as Salesforce provides a standard, out-of-the-box component that meets this exact requirement.

D. Add the Chatter feed component from the AppExchange: Resorting to the AppExchange is not required for this core, native functionality. The standard component is readily available within the Lightning App Builder.

1. Salesforce Help, Lightning App Builder, "Lightning Page Standard Components": The official documentation lists "Chatter" as a standard component. Its description states: "Gives users a way to participate in conversations about the record they’re viewing." This confirms it is the correct component for this task.

2. Salesforce Help, Salesforce Objects, "Enable Feed Tracking for Your Objects": This document explains that once feed tracking is enabled for an object, the Chatter feed becomes available. The standard way to display this on a record page is through the Lightning App Builder component. Section: "Enable Feed Tracking".

3. Salesforce Trailhead, Lightning App Builder Module, "Build a Custom Record Page for Lightning Experience and the Salesforce Mobile App": This module demonstrates the process of editing a record page, which includes dragging and dropping standard components like "Chatter" onto the page canvas. Unit: "Build a Custom Record Page".