Can someone now ?
which best compares the gravitational force and the strong force?

both are attractive and repulsive.
both are attractive only.
both are weaker than the electromagnetic force.
both are stronger than the electromagnetic force.

Both are attractive only.

Explanation:

Gravitational is pulling to the middle of the earth meaning attractive and strong force is also pulling meaning attracting.

B. Both are attractive force only.

Explanation:

Gravitational force and strong force are fundamental forces that exist in nature.

Gravitational force is the force of attraction between two heavenly bodies with which  it holds them where as strong force tends to hold the subatomic particles such as proton and neutron in a nucleus.

Gravitational force is implies on a long range where as Strong force has a short range as it deals with subatomic particles. Hence it is cleared both are attractive forces.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.