Concept:A solar eclipse takes place when the Moon moves directly between the Earth and the Sun.
Explanation:The Sun is the main source of light for the Earth.
When the Moon comes between the Earth and the Sun, the Moon blocks sunlight from reaching the Earth.
The Moon's shadow then falls on the Earth's surface.
From some places on Earth, the Sun appears fully or partially covered.
This event is known as a solar eclipse.
A lunar eclipse occurs when the Earth is between the Sun and the Moon, not when the Moon is between the Sun and the Earth.
Answer:B. a solar eclipse occurs.