Gravitational force does not depend on
A. Sum of their masses
B. Product of their masses
C. Gravitational constant
D. Separation of masses

Hint: Gravity, or gravitation, may be a phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward each other. On Earth, gravity gives weight to physical objects, and therefore the Moon's gravity causes the ocean tides.

Complete answer:
The gravity between two bodies doesn't depend upon the charge of two bodies. The dimensions of the gravity depends on the mass of the objects involved. The greater the mass, greater the gravity. Furthermore, if the gravity is to be detectable on a person's scale, then one among the objects must be as massive as a planet.

Gravitational force doesn't depend upon medium because gravity is unipolar. Electric charges have two polarities, so an electrical field polarises the medium it goes through. But gravity comes in just one polarity, attractive, so when it goes through a medium, there's no polarising effect or polarising forces.

When handling the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the space between them.

Hence, the correct answer is option A.

Note:We all know from Newton and his law of gravitation that any two objects within the Universe exert a force of attraction on one another. The greater the mass of the two objects and therefore the shorter the space between them, the stronger the pull of the gravitational forces they exert on one another.