Earth comes between sun and moon during a
a. Solar eclipse
b. Lunar eclipse
c. Annular eclipse
d. Total surface eclipse

Hint: When a celestial body completely masks another celestial body along the line of sight of an observer, Eclipse happens. There are generally two kinds of eclipse experienced from the earth; Lunar and Solar.

Complete step-by-step answer:
When Earth comes in between the sun and the moon, the shadow of the Earth makes the moon to completely disappear but often gives a reddish appearance due to the small number of light rays that got refracted from the Earth’s atmosphere and falls on the moon.
This is called the lunar eclipse and usually lasts for just a few hours. Lunar eclipses are generally of two types; total and partial. Total lunar eclipse occurs when the sun and moon are on the exact opposite sides of the Earth. A partial eclipse occurs when only some part of the Earth’s shadow falls on the moon.

Hence, option b is the correct answer.

Additional information:
Solar eclipse occurs when the moon gets in between the Earth and Sun and when seen from the Earth, both Sun and Moon look exactly of the same size.
In an annular eclipse, the edge of the sun remains visible around the moon as a bright ring.
Total solar eclipse takes place when the moon totally blocks the Sun when seen from the Earth. This eclipse is visible only in specific parts of the Earth.

Note: Eclipses occur either when the Earth comes in between the Sun and Moon or when the Moon comes in between the Earth and Sun. So with the name only we can guess the eclipse, like in Solar eclipse moon comes Sun is blocked by the moon and in lunar eclipse, moon is blocked by the Earth.