In the diagram, the sun, earth, and moon are in perfect alignment. which two conclusions can be drawn based on the diagram?

The correct answers are A) an observer in the Moon sees a solar eclipse, and D) an observer form the Earth sees a lunar eclipse.

In the diagram, the Sun, the Earth and the Moon are in perfect alignment. The two conclusions that can be drawn based on the diagram are: an observer in the Moon sees a solar eclipse, and an observer form the Earth sees a lunar eclipse.  

A solar eclipse occurs when the moon passes exactly between the Sun and the Earth and cast a shadow over a portion of the Earth. A lunar eclipse occurs when the Earth passes exactly between the Sun and the Moon, blocking the sunlight.