Answer:
you correct them when you finish your draft
or you correct them as you go
Answer:
The word "protracted" means lasting longer than expected, or unusually long, so what protracted most clearly means based on the context of the excerpt is how the time period of celestial motion studies must have lasted unusually long.
A a sign or character used to represent a tone
Answer:
Better understand characters and their actions.
Grasp nuances of plot when they are not directly stated.