Answered

What causes the moon's phases?
a. the rotation of the moon on its axis
b. earth's tilt on its axis as it revolves around the sun
c. changes in how much of the sunlit side of the moon faces earth.
d. the position of the moon each month in relation to?

Answer :

JonHenderson55
The answer is:  [D]:  "the position of the moon each month in relation to THE SUN AND THE MOON" .
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   Note of interest:  The origin of the word "month" was:  "moon-th" — but shortened to "month" — (no coincidence!).
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C.

Changes in how much of the sunlit side of the moon faces Earth

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