What Is Meant by the Statement, "Religion in the United

What is meant by the statement, "Religion in the United States is increasingly voluntaristic"?

A) People are more likely to choose their religion just because their parents did.
B) People are more likely to join a group that upholds their particular moral standards.
C) People who engage in volunteer activities are more likely to be religious.
D) Religious people are more likely to be community volunteers.