Only an experiment can prove: O A. a biological basis.
O B. effectiveness.
O c. causation.
O D. a relationship of any kind.

C).causation.

Explanation:

i am guess here but the most that make sense is C

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

human didn't come from monkeys man i hate these stupid teachers