A

This statement is true.
Step 1: Understand that friction is a force that opposes motion.
Step 2: When a person walks on a rough surface, the feet push backward against the ground due to the act of walking.
Step 3: According to Newton's third law, the ground exerts an equal and opposite force, which is the frictional force.
Step 4: This frictional force acts in the opposite direction to the person's motion, helping to propel the person forward.
Therefore, the statement is correct.