The purpose of attachment is to:
a. ensure that adults will take care of an infant.
b. make sure infants are not depressed.
c. keep infants healthy.
d. keep infants safe.

lifetime activities are certain actions that are either required throughout your life or you choose to do them. for example, eating is considered a lifetime activity, drinking water or other beverages, keeping your body clean, taking medicine. those types of actions are considered lifetime activities.

answerrunning;

age might have something to do with behavior depending on the age because not everyone who is the same age acts the same like 2 year olds could have bad behavior but some won't.

i hope this : )