There should be a comma after “failures”. hope that helped! :)
A is the correct answer because a prepositional phrase is telling where something is located. so a is saying that the envelope is in the drawer.
The answer is Miss Stacy<span> ... who </span>will<span> study every day after school to prepare for the </span>entrance exam<span> to Queen's ... They study for an hour every day, but begin to lose </span>their<span> drive when spring comes and the other </span>students<span> leave school early every day</span>