Correct Answer : Fragment
Explanation : Android Fragment is the part of activity; it is also known as sub-activity. There can be more than one fragment in an activity. Fragments represent multiple screens inside one activity.
Correct Answer : Fragments
Explanation : In android mini-activities are also known as Fragments
Correct Answer : startActivityForResult()
Explanation : startActivityForResult() should use when need to pass data back from an activity.
Correct Answer : onCreate() callback
Explanation : Android system initiates its program with in an Activity starting with a call on onCreate() callback method..