Why is the social clock an important consideration when understanding development?
A) It informs people how much longer they can expect to live in comparison with others in their culture.
B) It may differ for different generations and indicate different age ranges for completing developmental tasks.
C) It informs people of how much social interaction their culture says is necessary for healthy adult development.
D) It is a useful tool for making comparisons across different generations to see if the hypothesized developmental course is valid.