A. full
Full phase takes place when the Moon is on the opposing surface of the Earth from the Sun and we perceive only the bright side. Full phase can be evident all night long.
The phases of the Moon are the various forms that the moon seems from Earth over nearly a period.
As the Moon circles encompassing the Earth, the moiety of the Moon which meets the Sun will be sparked up. The various aspects of the illuminated part of the Moon that can be observed from Earth are identified as aspects of the Moon. Each phase replicates itself in every 29.5 days
