Ocean coring:
is the best technique for sampling the ocean floor
uses high energy pulses to penetrate the bottom layers of rock
is used to study the effects of turbidity currents
or
all of the above?

option A, is the best technique for sampling the ocean floor

Explanation:

Ocean coring is a process in which sample of sea floor sediment is taken and studied to understand its composition. it is a common practice during the petroleum production from sea floor and hence is known as ocean sediment coring.

Usually a cylindrical sample is extracted beneath the sea floor by dropping a cylinder through the water. The sedimentary sample collected show the deposition of sediment (variation) with due course of time.

hence , option A is correct

answer; /// the correct )