Answer:
Option (B) is correct.
Step-by-step explanation:
According to the third law of motion, for every action, there is an equal and opposite reaction. Both action and reaction force acts on the two different bodies.
The action and reaction are equal in magnitude but opposite in direction.
As, the person exerts a force on the raft, then raft also exerts a force on the person in opposite direction.
So the person moves in the opposite direction.