Roughly 7! 7 x 48 is 336 which is two short so maybe just say 8 to be safe.
Answer:
I think it's the top left answer choice because top right is a new moon, bottom left is a waxing crescent, and bottom right is 1st quarter.
It began when Galileo tried to use his tidal theory to prove the movement of the Earth around the Sun. Galileo theorized that because of the Earth's motion, borders of the oceans like the Atlantic and Pacific would show one high tide and one low tide per day.