ANSWER:
If the mass of an object is doubled, the gravitational force will also double.
Step-by-step explanation:
This is because the 'gravitational force' acting on a body is "directly proportional" to the "mass of the body". According to Newton’s Law of Gravity, a gravitational force equal to the mass of the body acts on the body and it is this gravitation force that attracts the body.
Therefore, gravitational force being directly proportional increases or decreases as the mass of the object increases or decreases.