The correct answer is D. The axis of rotation of the body.
The moment of inertia of a body is a measure of how difficult it is to change the rotation of the body. It depends on the mass of the body and how the mass is distributed. The moment of inertia is larger for bodies with more mass and for bodies where the mass is distributed further from the axis of rotation.
The angular speed of the body does not affect the moment of inertia. This is because the angular speed is a measure of how fast the body is rotating, not how difficult it is to change the rotation of the body.
The mass of the body and the mass distribution in the body are both factors that affect the moment of inertia. The more mass a body has, the larger its moment of inertia will be. The further the mass of a body is distributed from the axis of rotation, the larger its moment of inertia will be.