Which is true about mutations? A. They are always beneficial

B. They are always harmful

C. They are mostly neutral and unnoticed

D. They are always either beneficial or harmful

I think (D) its very rare and not beneficial very often

Explanation:

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: