The phase of the moon you see depends on a. where you are on earth’s surface. b. how much of the sunlit side of the moon faces earth. c. how much of the moon’s surface is lit by the sun. d. whether or not an eclipse is occurring.

b. how much of the sunlit side of the moon faces Earth.

Explanation:

The shape of the sunlit face of the moon as visible from Earth is known as phase of the moon. Moon has mainly eight phases:

New moon- when the lit face is not visible. This happen moon lies between Sun and Earth.

Waxing Crescent Moon - when less than half of the face is lit up.

First quarter - when half face of the moon is visible.

Waxing gibbous - When more that half face of the moon is lit up.

Full moon - When entire face of the moon is lit up. This happens when Earth lies between Sun and Moon.

Waning Gibbous moon - when lit face of the moon is less than full moon.

Third quarter - When half face of the moon is visible.

Waning crescent - when lit face of the moon is less than half but more than New moon.  

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