Answer:
The correct answer is C. 5 miles per hour.
Explanation:
1. Let's review the information provided to us for solving the question:
Distance covered by Sam in his boat = 10 miles
Time of travel of Sam in his boat = 2 hours
2. Let's find out the speed of Sam's boat during his travel:
Speed of Sam's boat = Distance covered by Sam in his boat / Time of travel of Sam in his boat
Speed of Sam's boat = 10 miles / 2 hours
Speed of Sam's boat = 5 miles per hour
The correct answer is C. 5 miles per hour.