Which of the following are the benefits of lightning apps for Salesforce users? (Choose 3 options)

Answer options:

A.Users can access their recent records through the navigation bar
B.Users can change context through the app launcher
C.Users have access to the objects and the pages they use most
D.Users can create JavaScript buttons through the lightning app

Correct Answer: A, B, and C 
The lightning app is beneficial for users who work in lightning. It allows them to create and access their recent records through the navigator bar. They can access the objects and the pages they use THE most, and they can change the context through the app launcher. 
Option D is incorrect because users don’t have the ability to create JavaScript buttons in lightning. 
Reference: 

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