If an astronaut has a mass of 60 kilograms, then she weighs
-- about 588.4 newtons (132.3 pounds) on Earth, and
-- about 97.4 newtons (21.9 pounds) on the Moon.
Her mass doesn't change no matter where she is, because
mass doesn't depend on the local gravity.
It's D. Fertile Crescent.
B. Nuclear fission is the answer