Which of the following describes a lunar eclipse? A
The Moon's shadow is on Earth.

B
Earth's shadow is on the Sun.

C
Earth's shadow is on the Moon.

D
The Moon's shadow is on the Sun.

From our perspective on Earth, two types of eclipses occur: lunar, the blocking of the Moon by Earth's shadow, and solar, the obstruction of the Sun by the Moon. When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth.

Hopes this helps

c

Explanation:

       when earth casts it shadow on moon then moon is not visible from earth.

and lunar eclipse occurs when earth casts its shadow on moon

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000