The study guide identifies C. Compact Layouts as the correct answer.
The requirement is straightforward: when a sales representative views an Opportunity record, the most important fields should be immediately available without requiring unnecessary navigation or custom development.
Compact Layouts are the standard Salesforce feature selected by the guide for surfacing key record information concisely. The UX objective is to ensure that users can quickly orient themselves to the record and access the information required for common decisions.
Option A, a custom Lightning Web Component, would introduce custom development even though the scenario can be addressed using standard Salesforce configuration. This would add implementation complexity without a demonstrated need.
Option B, Tabs, can help organize larger groups of page content, but they do not specifically solve the requirement to expose a concise group of high-value record fields.
The UX principle is prioritization of information. Not every field on an Opportunity carries equal importance during routine record viewing. A compact presentation allows the designer or administrator to surface the fields that users need most frequently while keeping the broader record available when required.
Study Guide reference/topics: Compact Layouts, key fields, Opportunity records, information prioritization, Declarative Design.
==================================
