When devin spencer went to work for a printing shop, he thought he was going to have to join the union representing the shop. however, on his first day of work he was told that while there was a union representing the workers, he was not required to join, and he didn't have to pay any dues to the union if he chose not to join. devin evidently works in a state with a right-to-work law that allows a(n) shop.

open

Explanation:

Since Devin is not required to pay anything or even join a labor union after employment, his workplace is called an open shop, according to the right-to-work law. In this kind of employment place, an employee's job is not conditioned by taking part in a union or paying any fees to it. This means that the employee can choose whether he/she wants to join a union or not

On the contrary, closed shops and union shops demand that their employees must be union members (or to become union members in a given period). Also, an agency shop is a type of workplace where employees can also decide whether they want to join a union or not. But, unlike in open shops, those who opt to remain "non-union" still have to pay a certain fee.

answer; ///retained

the answer is i don't know