Earth’s tides are determined by the moon’s pull.
a. rotational
c. gravitational
b. radial
d. ecliptic

The answer is definitely C, which is gravitational pull. Tides is the rise or fall of bodies of water. It is mostly caused by an attraction between the earth and the moon. This attraction or interaction is due to gravity. Hope i helped. Have a nice day

C - Gravitational

The moons gravity slightly pulls the ocean towards it creating a bulge and hence inducing tides.

The objects are acted upon by only one force. gravity. mass times the acceleration of gravity (-9.81meters/second squared).