Answer:
- Waning gibbous moon.
Explanation:
As per the given description, the student is most likely to observe 'waning gibbous moon' after the full moon. The term 'waning' implies 'getting smaller', while gibbous means 'slightly smaller than the complete circle'. Therefore, the third quarter i.e. full and last quarter moon would be reflected through 'waning gibbous moon' immediately after the full moon. Thus, the 'waning gibbous moon' would be the answer as it displays the best phase of moon to be displayed next after the full moon.