The correct option is A 250 miles
Theodore travels 50 miles in 1 hour. He travels 100 miles in 2 hours.
Let us find the difference between the terms.
Difference = 100 - 50 = 50
Hence, to find the next term, we have to add 50.
Hence, the pattern is 50, 100, 150, 200, 250.
Hence, after 5 hours, he would have traveled 250 miles.