Answer: Option D) 2,700 Joules
Step-by-step explanation:
Work is done when the force is applied in a specific direction. It is measured in joules. Thus, Workdone is the product of force and distance
Workdone = Force X Distance
Force = 90Newton
Distance = 30 metres
Workdone = 90N X 30m
Workdone = 2700 joules
The climber does work of 2,700 joules