This is because he would find the most students in the cafeteria. It is not A because not everyone goes to basketball games. It's not C because you're looking for where you will find the most students. And it's not D because thats local and he is trying to find how many students want to organize a club NOT random people at a movie theater.
One inch of board is left if you subtract the two 3 inches pieces from the board the further subtract the 24 inches from the three 8 inches pieces you get 31-30
