Detailed Explanation:

The Coriolis force is an apparent deflection of moving objects (air, water, projectiles) caused by the Earth's rotation. It acts perpendicular to the direction of motion and the axis of rotation, influencing wind patterns, ocean currents, and cyclone formation.

The solar system and Earth's interior do not generate this effect, and ocean currents like the Colorado and Gulf Streams are themselves influenced by the Coriolis force, not its cause.

Therefore, Earth's rotation is the sole cause of the Coriolis force, making Option 2 the correct answer.