Answer:
tldr; the answer is b
Step-by-step explanation:
hi there!
let me do a quick run down of the answers to help you out in the future!
a: since "including me" is in commas, you can rule that out of the sentence and simplify it to "nobody in the room know why i said that", which makes this easier. if you look, there's an error with the -s rule in this sentence! this sentence is wrong! in order for it to be right, the sentence must read "nobody in the room knows why i said that".
b: you should focus on the AND in this answer (ice AND spring water). in this situation, you have to look at the "spring water" bit, which is singular. the verb in the sentence is also singular (has). if spring water was instead something plural (for example, sodas), the sentence would be incorrect. "ice AND sodas has always been my favorite drink". however, spring water is singular. so this is the answer.
c: your subject in this sentence is visitors, which is plural. the verb is was, which is not plural. these two don't match up!
d: there's an -s rule for figuring this out. the subject and verb cannot both have -s's on the ending! here, friends and likes both have that -s on the ending that make this one wrong. if it were friends and like, it would be correct. furthermore, if it were friend and likes, it would also be correct (with some grammatical changes to the beginning).