2. which one of the following political interest groups falls into the organized labor category? a. national broadcasting corporation b. national audubon society c. national education association d. national rifle association

Organized labor, or trade union, is an organisation of workers which has as its aim to fight for and improve the workers' rights. Out of the 4 options only D. National Education Association is an organisation of workers- this is the correct answer. 

The other organisations don't work for workers' rights, but instead for environment protection (C), the right to keep arms (A) and B is a media network.