Concept:A lunar eclipse happens when the Earth blocks sunlight from reaching the Moon.
Explanation:During an eclipse of the Moon, the Sun, Earth, and Moon are aligned in a straight line.
The Earth is positioned exactly between the Sun and the Moon.
This causes the Earth's shadow to fall on the Moon.
So the Moon appears darkened because sunlight cannot reach it directly.
This matching arrangement is described by option C.
Answer:C. The earth comes exactly between the moon and the sun.