Question

which earth, moon, sun configuration below is necessary for a lunar eclipse to occur? diagram a diagram b diagram c

Explanation:

A lunar eclipse occurs when the Earth is directly between the Sun and the Moon. This alignment causes the Earth's shadow to fall on the Moon. In Diagram A, the Sun, Earth, and Moon are in a straight line with the Earth in the middle. In Diagram B, the Moon is between the Sun and Earth (which is the configuration for a solar eclipse). In Diagram C, the alignment is not correct for a lunar eclipse as the Earth is not between the Sun and Moon in a straight - line fashion.

Answer:

Diagram A.