Final answer:
When the mass of one of the bodies is tripled while keeping the distance between them unaltered, the force between them will also triple.
Step-by-step explanation:
When the mass of one of the bodies is tripled while keeping the distance between them unaltered, the force between them will also triple. This is because according to Newton's law of universal gravitation, the force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
So, if the mass of one body is tripled, the force will be:
Force = (200 kg * 3) * (5.00 N) = 600 N
Therefore, the correct answer is a) 600 N.