The force of gravitation is

Options

A. repulsive
B. electrostatic
C. conservative
D. non-conservative

Explanation

### Step-by-Step Solution

1. **Understanding the Concept of Gravitational Force**:
The gravitational force is the attractive force that exists between any two masses. It is described by Newton's law of universal gravitation.

2. **Definition of Conservative Force**:
A conservative force is one where the work done by the force on an object moving from one point to another is independent of the path taken. The work done in moving an object in a closed path (round trip) is zero.

3. **Applying the Definition to Gravitational Force**:
When an object is moved in a gravitational field and returns to its original position, the net work done by the gravitational force is zero. This is because the work done in moving downward is equal in magnitude and opposite in direction to the work done in moving upward.

4. **Conclusion**:
Since the work done by the gravitational force in a closed path is zero, we conclude that the gravitational force is conservative in nature.

### Final Statement:
The force of gravitation is conservative because the work done by the gravitational force along a round trip is zero.

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