At mid-day, what would be the best choice in attempting to communicate with a shore station some 75 miles distant?

Correct Answer: Option D — MF

For a 75-mile distance, the signal is best served by MF (Medium Frequency) bands. VHF-FM is typically limited to line-of-sight (approx. 20-30 miles), while HF bands are designed for much longer distances and would likely skip over a station only 75 miles away, resulting in poor or non-existent reception.