Select the correct answer to complete the sentence. Gravitational force is said to be universal because:

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it operates in one direction.
it operates only within our solar system.
it applies mainly to planets and moons.
it applies to all objects

it applies to all objects

it applies to all objects

To determine the correct answer to complete the sentence, we need to understand why gravitational force is considered universal. Gravitational force is a fundamental force of nature that exists between any two objects with mass. It is universal because it applies to all objects in the universe.

Based on this understanding, the correct answer to complete the sentence is: "it applies to all objects."