Universal Container’s Sales Manager wants certain fields to be highlighted so that they’ll appear at a glance in the lightning interface. He wants users to have a segment and account type on the account, and opportunity owner and stage on the opportunity. Which functionality would help the Salesforce Admin to add these fields?

Answer options:

A.Page Layout
B.Compact Layout
C.Lightning app
D.Navigation Bar

Correct Answer: B 
The compact layout will allow users to have certain fields highlighted at a glance. The fields can be presented to the users and reflected on the page layout, so the users can quickly see them when they access the record. 
Option A is incorrect because the page layout allows you to add all fields that they need on the page and it’s a detail page with all the information. 
Option C is incorrect because lightning apps provide flexibility to add objects to custom tabs and components. 
Option D is incorrect because the navigation bar allows users to access the most essential objects and tabs. 
Reference: 

https://help.salesforce.com/articleView?id=compact_layout_overview.htm&type=5