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:
share ideas for solving the plastic trash problem
I think Grendel get stuck in a tree because of his careless curiosity of the world above him, that of the humans. He know nothing about that world because he was used to his own world in the underground however he still get tempted to explore. He was also attacked by a bull there because he looks different from the rest of the creatures above.
Nick calls Tom and Daisy “careless people” because he recognizes them as selfish, insensitive individuals who take advantage of people and retreat back into their money without accepting responsibility for their actions. After spending time with the Buchanans, Nick is appalled by their lifestyle and reckless decisions.