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.
Answer:
what
Explanation:
what exactly are you asking
its to seperate the stamement in to two pieces
the practice or science of collecting and analyzing numerical data in large questions
