Why do we see different phases of the lunar cycle?

as the moon rotates around its axis, different sides of it become visible.

as earth rotates around its axis, people can see different sides of the moon.

as earth revolves around the sun, the moon is cast in different shadows by earth.

as the moon revolves around earth, the different amounts of the sunlit side faces earth.

The last option,

As the moon revolves around Earth, the different amounts of the sunlit side faces Earth.

The last option is the correct answer

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: