What is the minimum speed limit on an interstate highway in Florida?

Answer: D — 75 mph

The minimum speed limit on an interstate highway in Florida is 45 mph, not 15 mph as option A may suggest. Option B and C are also incorrect as the minimum speed limit on an interstate highway in Florida is not 30 mph or 65 mph. Option D is the correct answer as the minimum speed limit on an interstate highway in Florida is 45 mph. This speed limit is in place to ensure the safety of drivers and maintain a steady flow of traffic on the highway. Going too slow on the highway can impede the flow of traffic and potentially cause accidents. Therefore, options A, B, and C are incorrect as they do not accurately reflect the minimum speed limit on an interstate highway in Florida.