Answer:

or

Explanation:
As we know that the beat frequency is given as

here we know that


now we have

now we have

so we have

or

The answer to this question is impermeable rock. water table
Eaither D or A bit I am leaning more towards D
Answer:The answer must be The weight of the man and the vertical distance moved.
Explanation: you calculate it by the force you applied times the distance you moved