Doyle learned that only one side of the Moon is ever visible from Earth. He wants to investigate how the moon moves around the E
arth and to understand how this motion causes the phases of the moon. Which kind of scientific investigation should he use? development of a model a review of existing work a field study
Explanation: He should develop a model of the Earth-Moon-Sun system. This will let him clearly see how the Moon must move in order for one of its sides to always face away from the Earth. If he uses a light source for the Sun in his model, it will also show how the phases of the Moon happen. The real Earth-Moon-Sun system is too large for him to observe it in the same way.
