Answer:
D. Labor union leaders believed that even low-level employees should have some influence over their wages and conditions.
Explanation:
Remember, a union is an organized association of workers formed to protect their own interests. So the only answer that would make sense would be D. All the other answers would apply to the industrialist, since the goals of the industrialist would be to profit, wether it be at the expense of the workers well being or not.
Social Contract
When we choose our politicians the idea that we elect them to protect our rights and freedoms in return for giving them power and losing some of ours is a social contract.
The answer is certainly c