Which one of the following is something you need to be aware of when designing screen maps?

a. You can use reusable fragments for displaying like content.
b. A screen means you need an activity.
c. You should never use more than one navigation design pattern.
d. You should never group fragments together.

a. You can use reusable fragments for displaying like content.
When designing screen maps, there are a few things you should be aware of:
• A screen does not necessarily mean you need an Activity. Instead, you can use reusable fragments for displaying like content.
• Group content fragments together when in a multipane layout but group them separately when in a single-pane layout.
• When possible, use one or more of the navigation design patterns that are commonly recommended for use in Android applications.