The noun in this sentence which is uncountable, meaning that it names something that cannot be counted is the noun water.
You cannot count how many waters there are - it is uncountable. The other nouns, students and pitcher are countable, so they cannot be the correct answers, but rather water is.
It is most likely B. An intransitive verb doesn't have an object, the action verb(cheered) is in front as well.
The answer is C
Because people are more likely to pay attention if its interesting
