Which term refers to a demographic pattern in which a substantial percentage of the population in a given country is young, typically below the age of fifteen?

Within subject and between subject designs have different advantages and disadvantages

Indicate whether the statement is true or false

Why do interest groups typically offer tangible benefits to their members?

a. to foster greater diversity among group members b. to encourage only the most committed supporters to become involved c. to distract members from the groups' political motives d. to overcome the free rider problem