Answer:
Option A. The statement that best expresses the author's view of union membership is the following: He believed that union membership is a right of every citizen.
Step-by-step explanation:
In the excerpt Theodore Rhodie, a former Pullman employee, expresses his discontent with being asked to hand up his American Railway Union membership, as he says that if he did so he would be also giving up his principles, and his rights as an American citizen. What he is doing by saying so is expressing how freedom to join a union is a right given to every American citizen, and therefore cannot be simply asked to be given up so easily, as it constitutes an important part of the worker's life.