Which of the following explains how fault is formed? a. Earthquakes shake the rocks to slide horizontally, vertically, or sideward.
b. Gravity pulls on the crust to slide up, down or past each other.
c. Different forces pushing or pulling on the crust causes rocks to slide horizontally, vertically, or sideward.
d. Same force pushing or pulling on the crust causes rocks to slide horizontally, vertically, or sideward.​

a. Earthquakes shake the rocks to slide horizontally, vertically, or side-ward.

Explanation:

The correct answer is - a.Earthquakes shake the rocks to slide horizontally, vertically, or side-ward.

Reason -

A fault is a fracture or zone of fractures between two blocks of rock.

Faults allow the blocks to move relative to each other. This movement may occur rapidly, in the form of an earthquake - or may occur slowly, in the form of creep.

During an earthquake, the rock on one side of the fault suddenly slips with respect to the other.

The fault surface can be horizontal or vertical or some arbitrary angle in between.

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