If you observe the Moon to be in the waning gibbous phase tonight,in three days it could be in the ________ phase.
A) new
B) first quarter
C) full
D) third quarter

Question

Quizplus · Accepted Answer

The Moon progresses from a waning gibbous to a third quarter phase as it moves past the full moon phase towards the new moon. This transition takes about a week, so in three days, it is reasonable for the Moon to be in or approaching the third quarter phase.

If You Observe the Moon to Be in the Waning