Question

what is this diagram showing?
a an equinox
b a lunar eclipse
c a solar eclipse
d the winter solistice

Explanation:

A solar eclipse occurs when the Moon passes between the Sun and Earth, blocking the Sun's light. In the diagram, the Moon is positioned between the Sun and Earth, which is characteristic of a solar eclipse. An equinox is when day and night are approximately equal in length. A lunar eclipse is when the Earth is between the Sun and Moon. The winter solstice is the shortest day of the year.

Answer:

C. a solar eclipse