To convert miles to feet, we multiply by 5,280.
To convert hours to minutes, we multiply by 60.
So, if a pickleball moves at a speed of 100 miles per hour, the speed in feet per minute would be:
100 miles/hour * 5,280 feet/mile * 1 hour/60 minutes = 88,000 feet per minute.
Therefore, the correct answer is 88,000 feet per minute.