In the following sentence, a word has been italicized. To what category of noun does it belong?
                              We saw a fleet of ships in the harbor.
A)Abstract noun
B)Uncountable noun
C)Collective noun
D)None

Hint: Fleet refers to a group of ships sailing together. So, it is talking about ships in a large quantity.

Complete step-by-step answer:

 First, you should be able to understand the meaning of nouns. Nouns refer to the name of a person, place, thing or animal. Nouns can be further classified into several categories- Common noun, Proper noun, Abstract noun, Collective noun, Countable and Uncountable nouns and so on.
While keeping the hint in your mind, let’s examine the given options-
Abstract noun- It refers to feelings, emotions, qualities, state that lack a physical formation.
Example- The soldier is known for his bravery.
Uncountable noun- It refers to things that cannot be counted in numbers.
Example- The baby spilled powder on the floor.
Collective noun- It refers to a large collection of people, things and animals.
Example- A pack of wolves attacked the village.
The correct answer is Option C- Collective noun, as Fleet refers to a large collection of ships.

Note: The difference between Collective nouns and Uncountable nouns is that you can count collective nouns but you cannot count the latter in numbers.