A. Yesterday, Leo had a __more difficult__ time sleeping than today.
B. is incorrect because it is incorrect to say one has "a difficultly time" doing anything; you have "a difficult time" doing something.
C. is incorrect because you can not say "most" when comparing something to something else; you can either say "It was the MOST difficult" or "It was MORE difficult than that."
Water is a compund of 1 hydrogen atom and 2 oxygen atoms. water was just the name given to it.
There are no sentences to select but there different because california is a state
