Answer:
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
