Final answer:
The person did 450 Joules of work on the box by applying a force of 150N over a distance of 3m.
Step-by-step explanation:
To determine how much work the person did on the box, we can use the work formula: work (W) = force (F) × distance (d). In this case, the force applied is 150N and the distance moved along the ramp is 3m. Therefore, the work done is W = 150N × 3m = 450 Joules. The correct answer is (A) 450J.