(A) 13 Years
(B) 16 Years
When children reach 13 years of age (or the applicable age in their country), they can choose to manage their own Google Account or agree to let their parents supervise them. They can end this supervision at any time and are free to leave the family group.
This question is from the Android Mobile Test Out module of the Android Mobile Certification (Updated) course. You can find all the answers to this exam on our Android Mobile Certification (Updated) Answers page.