Question

how is the moon illuminated?
it produces its own light.
it reflects light from the sun.
it transforms energy into light.
it absorbs light from the earth.

Explanation:

The moon is a non - luminous body. Luminous bodies like the Sun produce their own light. Non - luminous bodies do not produce their own light. The moon appears bright because it reflects the light of the Sun. It does not transform energy into light (like stars do through nuclear fusion) and it does not absorb light from the Earth to be illuminated (the Earth is also a non - luminous body and does not produce enough light for the moon to be illuminated in that way).

Answer:

It reflects light from the Sun.