Answer:
c. The mass of the object will be the same on both planets
Step-by-step explanation:
Mass is an intrinsic property of matter that is not affected by the presence of a gravitational field.
The property of matter that is affected by gravity is its weight.
And although the weight depends on the mass of the object, when moving to another planet mass must remain the same. What changes is the acceleration that the body feels towards the planet cause by the gravitational force and therefore the weight, not the mass.