0. A lunar eclipse occurs when
A lunar eclipse happens when the Earth moves directly between the Sun and the Moon, casting a shadow on the Moon. This can only occur during a full moon.
A. Sun, Moon and Earth are not in the same line – Incorrect. A lunar eclipse occurs only when all three are aligned.
B. Earth comes between the Sun and the Moon – Correct. This alignment blocks sunlight from reaching the Moon.
C. Moon comes between the Sun and the Earth – Incorrect. This causes a solar eclipse, not a lunar one.
D. Sun comes between the Earth and the Moon – Incorrect. This alignment never occurs in reality.