When an electron moves from a lower to a higher energy level, the electron . A. moves closer to the nucleus

B. absorbs a continuously variable amount of energy

C. always doubles its energy

D. absorbs a quantum of energy

When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. So B.

Explanation:

When an electron moves from a higher to a lower energy level, energy is released (often as light).

yes it does  Astronomers like to list the distances to objects within our solar system (planets, dwarf planets, asteroids, comets, spacecraft, etc.) ... One astronomical unit is the approximate mean distance between the Earth and sun. It's about 93 million miles (150 million km), or 8 light-minutes.

Explanation: