Final answer:
The work done by the man is 225 J, calculated using the formula for work, considering the angle of the applied force is 0° with respect to the direction of motion.
Step-by-step explanation:
The student asked how much work is done by a man who exerted a force of 75.0 N to push a box up a 20° ramp for a distance of 3.00 meters. To calculate work, we use the formula work (W) = force (F) × distance (d) × cos(θ), where θ is the angle of the force with respect to the direction of motion. Since the force is exerted parallel to the ramp, the angle θ is 0° and cos(0°) = 1. Thus, the work done is 75.0 N × 3.00 m × 1 = 225 J. The correct option (not listed in the provided choices) would be 225 J.