What phase of the moon would someone
on Earth see when the moon is at
Positions A through F?

First quarter is the phase of the moon would someone on Earth will see when the moon is at Positions A through F.
This is the phase which occurs when the moon is 90 degrees away from the sun in the sky and is half-illuminated from our point of view.
When looking it at the moon from point F it's half-illuminated which depicts the First quarter moon phase.
Read more about First Quarter of moon here https://brainly.com/question/13538936