2. what must happen for eclipses between the earth and moon to take place?
a) the moon must be 1st or 3rd quarter phase and be close to the horizon
b) the moon must be at closest approach
c) the moon must be located on the earth-sun plane
d) the moon must be full or new phase and be located on the earth-sun plane
e) the moon must be in a saros cycle

correct option is d) the moon must be full or new phase and be located on the earth-sun plane

Explanation:

we know here that eclipse happens when New Moon move between the Earth and the Sun

because in eclipse Moon passes directly behind Earth and into its shadow

and lunar eclipse is occur when the Earth casts shadow on the Full Moon

so in total lunar eclipse the Earth completely block sunlight that is reaching the Moon

so here correct option is d) the moon must be full or new phase and be located on the earth-sun plane