Which of the following statements about political apathy in the U$.$S$.$ is correct?

Select one:

a$.$ The demographic with the most voter apathy is the young; however, the young do vote more often as they grow older.

b$.$ Half the people in the U$.$S$.$ have contacted a national, state, or local official about a political issue or problem.

c$.$ Only a small minority of all citizens are familiar with the political process in the U$.$S$.,$ and very few tend to identify with a political party.

d$.$ Young people are not alienated from the political system, contrary to popular belief.