Final answer:
The man walks in the same direction of motion as the bicyclist. Hence the correct answer is option A
Step-by-step explanation:
The correct answer is a) in the same direction of motion as the bicyclist.
When the man walks perpendicular to the direction of motion, it means he is walking in a direction that is 90 degrees to his actual direction of motion. In this case, the man is 6 feet tall and he is walking perpendicularly, which means he is walking alongside the direction of motion. Therefore, the answer is a) in the same direction of motion as the bicyclist.