Final answer:
During a total solar eclipse, the Earth casts a shadow on the moon. A lunar eclipse is visible to everyone who can see the Moon.
Step-by-step explanation:
The correct answer is b) The Earth casting a shadow on the moon.
During a total solar eclipse seen on the moon, the Earth casts a shadow on the moon. This occurs when any part of the moon enters the shadow of the Earth. People on the night side of Earth can witness a lunar eclipse when the Moon passes into the shadow of Earth.
A lunar eclipse is visible to everyone who can see the Moon, as opposed to a solar eclipse, which is only visible in certain areas on Earth.