my question sounds so basic..but, i want to know the exact difference or explanation clearly or grammartically.

which subject do you like best ?
which subject do you like the best?
which subject do you like the most?

one more thing, isthis expression correct? sounds awkward?

which room smells the best?
which room smells the worst?

or should be which room smells best? which room smells worst?

because smell은 감가동사이므로 보어로 형용사가 오니까 바로 best나 worst 만 써야하나요?

so confusing!! please let me the exact expression using the best, the most, best and most!!

the more i think, the more i get confused~~