Question

the federal agency that oversees insurance companies is
the consumers union
the department of transportation
the federal trade commission
insurance companies are regulated on a state - by - state basis

Explanation:

Insurance companies in the U.S. are primarily regulated at the state level, with no single federal agency overseeing them. The other options are federal agencies focused on non-insurance areas: Consumers Union is an advocacy group, DOT handles transportation, and FTC oversees fair trade practices.

Answer:

Insurance companies are regulated on a state-by-state basis