Answer:
1.If
2. Since
3. Thus
4. Moreover
5. Because
I am sorry if my answers are wrong.
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.
The point of an "Entertain speech" is, of course, to be entertaining. The best answer for this would be "The best thing about being a twin" because the rest of the options are examples of "Informative speech".
The answer to this question would be A