If ur meaning cavins. a cavin is like a cave or a hollow route. idk if thats what ur asking?
Answer:
A) 
Explanation:
Maximum voltage =
Maximum voltage and rms voltage are related to each other by

Velocity as a Vector Quantity
Because the person always returns to the original position, the motion would never result in a change in position. Since velocity is defined as the rate at which the position changes, this motion results in zero velocity.
The answer is D.<span>longitudinal</span>