Question

political machines were likely to approve public work projects for companies that

were qualified.

were anti - union.

promised their votes.

promised good discounts.

Explanation:

Political machines in history often operated with patronage and vote - seeking motives. They would approve public work projects for companies that promised their votes, as this helped them maintain power and influence through electoral support. Being qualified, anti - union, or promising discounts were not the typical reasons political machines approved such projects.

Answer:

C. promised their votes.