Correct Answer : Open Handset Alliance
Explanation : OHA stands for "Open Handset Alliance". It's a consortium of 84 companies such as google, samsung, AKM, synaptics, KDDI, Garmin, Teleca, eBay, Intel, etc.
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..