Final answer:
The mass of a moving object does not depend on its speed.
Step-by-step explanation:
The correct answer is letter b) The mass of a moving object does not depend upon its speed.
This is an important concept in physics known as relativistic mass. According to Einstein's theory of relativity, the mass of an object increases as it approaches the speed of light, but it does not depend on its speed. The equation that relates energy and momentum is E^2 = (mc^2)^2 + (pc)^2, where E is the total energy, m is the rest mass, c is the speed of light, and p is the momentum. From this equation, we can see that momentum is related to mass and velocity, but mass itself is independent of speed. Therefore, the mass of a moving object does not depend on its speed.