Question

which positions of the earth, sun, and moon will show you a full moon at night?

Explanation:

A full moon occurs when the Earth is between the Sun (S) and the Moon (M). In the second diagram, Earth (E) is at the center, Moon (M) is opposite to Sun (S) with Earth in between. This alignment allows the entire illuminated side of the Moon to face Earth at night, creating a full moon. Other diagrams have Moon in different positions (e.g., near Earth, on same side as Sun) which don't align for full moon.

Answer:

The second option (with S, E at center, M above E) shows the Earth between Sun and Moon, causing a full moon.