Final answer:
An Android activity can include an Action Bar starting from Android 4.0 (API 14), which displays the activity's title and may include action buttons.
Step-by-step explanation:
With Android 4.0 (API 14) and later, an activity can include a Action Bar that displays the activity's title and, optionally, buttons that perform actions. The Action Bar is a key user interface element that has replaced the older title bar from previous Android versions. It often provides navigation, search functionalities, and can also include other widgets. With the introduction of the even newer ToolBar, which can be used as a more flexible replacement for the Action Bar, developers can create a more customized user experience. However, the basic concept of an area at the top of the screen providing user interaction remains the same.