Your Professor Is Telling the Class That People Need to Develop

Your professor is telling the class that people need to develop social clocks.Thinking this is an odd phrase,you look it up in your textbook and discover that it refers to

A) how people keep track of their social appointments.
B) the idea that time is a social phenomenon.
C) how people evaluate whether they are on time for age-related goals.
D) the influence that others have on peoples' ability to achieve their goals in a timely manner.