Your cell phone could ring in class without your instructor hearing it because

The correct answer is: you activated the silent mode.

Explanation:

The silent mode is an option most cell phone devices include and allows users to receive calls without others noticing it. What the silent mode does is to deactivate all the cell phone sounds such as ringtones, keypad tones or any other notification sound to avoid others hearing them. It is useful when an important call will be received and people are in meetings or public spaces.

answer; i believe the correct answer to be the parents and primary groups bears most of the responsibility for socialization in the cooley's theory;