Why Is Declining Membership in Traditional Organizations Such as the Boy

Why is declining membership in traditional organizations such as the Boy Scouts insufficient evidence that Americans are becoming less interested in organizing?

A) People who would have once joined the Boy Scouts have joined the Tea Party instead.
B) Rates of volunteerism and membership in other organizations are still high.
C) Many people now prefer to make charitable donations online rather than in person.
D) Many of the skills the Boy Scouts learned are now being taught in outdoor education programs in the public schools.