Answer :
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.
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.
