Final answer:
The maximum limit for a residential structure covered by flood insurance is $250,000.
Step-by-step explanation:
The maximum limit for a residential structure covered by flood insurance is $250,000 (option D).
Flood insurance provides coverage for damages to a home caused by flooding, and the maximum limit represents the highest amount that an insurance policy will pay for such damages. It is important for homeowners to obtain flood insurance if they live in areas prone to flooding to protect themselves financially.