Answer: On Mars, a person will weigh less than on Earth.
Step-by-step explanation:
The mass of the planet Mars is less than Earth. Because of this it pulls the objects on it with less force and thus Mars has less value of acceleration due to gravity.
The weight of the object is given by the product of mass and acceleration due to gravity.
W = m g'
W ∝ g'
The mass remains constant irrespective of the planet but weight varies with the value of acceleration due to gravity. Thus, on Mars, a person will weigh less than on Earth.