Vince knew that if he wanted to get into college, he'd have to keep his nose to the grindstone all senior year. what does "keep his nose to the grindstone" mean? A, B,C, D?

A- Vince would have to apply for college.
B- Vince would have to work hard for a whole year.
C- Vince would have to wait patiently for an opportunity.
D- Vince would have to stay out of trouble for a whole year.

B- Vince would have to work hard for a whole year.

Explanation:

the answer:

in the first part of the story running is all that matters to squeaky. running gives her confidence and defines who she is. at the beginning of the story she says that other kids call her mercury because she runs very fast. in the text she refers to herself as "miss quicksilver".

the line that provides the best evidence that squeaky has self-confidence is

" and i continue with my breathing exercise, strolling down broadway toward the ice cream man on 145th with not a care in the world cause i am miss quicksilver herself".