Which of the following statements is correct regarding the gravitational force?

Options

A. The gravitational force is dependent on the intervening medium.
B. The gravitational force is a non-consevative force.
C. The gravitational force forms action- reaction pair.
D. The gravitational force is a non-central force.

Explanation

To determine which statement regarding gravitational force is correct, we will analyze each option provided in the question.

### Step 1: Analyze the first statement
**Statement:** The gravitational force is dependent on the intervening medium.

**Analysis:** The gravitational force acts between two masses and does not depend on the medium between them. It is a fundamental force that operates through a vacuum as well as through any medium. Therefore, this statement is **incorrect**.

### Step 2: Analyze the second statement
**Statement:** The gravitational force is a non-conservative force.

**Analysis:** A conservative force is one where the work done by the force is independent of the path taken and depends only on the initial and final positions. Gravitational force is a conservative force because the work done in moving an object in a gravitational field is path-independent. Therefore, this statement is **incorrect**.

### Step 3: Analyze the third statement
**Statement:** Gravitational force forms action-reaction pair.

**Analysis:** According to Newton's third law of motion, for every action, there is an equal and opposite reaction. The gravitational force between two objects (e.g., the Earth and an object) is indeed an action-reaction pair. If the Earth exerts a gravitational force on the object, the object exerts an equal and opposite gravitational force on the Earth. Therefore, this statement is **correct**.

### Step 4: Analyze the fourth statement
**Statement:** The gravitational force is a non-central force.

**Analysis:** A central force is one that acts along the line joining the centers of two bodies. Gravitational force is indeed a central force because it acts along the line connecting the centers of the two masses. Therefore, this statement is **incorrect**.

### Conclusion
After analyzing all the statements, we find that the only correct statement is that gravitational force forms an action-reaction pair.

### Final Answer
**Correct Statement:** Gravitational force forms action-reaction pair.

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