R has to be alone. If the four boys are assigned to lockers 2-5, then R must be assigned to locker 1.
Therefore, locker 1 can’t be shared.
The two shared lockers can’t be beside each other, because N and T are in the shared lockers. J shares locker 5 with one of N or T.
So locker 4 can’t be shared, because it is beside J and N/T.
D is CORRECT.
Doris says
Great resource. Question here. Locker 2 couldn’t be shared either since it is next to locker 3. Thus Lockers 1, 2, 4 are all lockers than can’t be shared. Why is D a better answer than say E?
Tutor Rosalie (LSATHacks) says
E would be immediately eliminated since locker 1 needs to be single.
Doris says
I was assuming that the shared locker had to be the 3rd locker only. It could be the 2nd as well. Got it . Thanks!