Between which two points in the diagram above would a waxing gibbous phase of the moon be visible to people on Earth?

The two points in the diagram between which the waxing gibbous phase of the Moon will be visible to people on Earth is;

(B) Between X and Y

Explanation:

Gibbous phase of the Moon is the phase of the Moon where more than half the Moon is lighted but the Moon is not completely lighted

The gibbous phase occurs between the half Moon and the full Moon stages as the Moon orbits round the Earth

Therefore the waxing gibbous phase of the Moon will be visible to people on Earth between the points X and Y in the diagram

where are the choice options?

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock