Collective Nouns:
A collective noun is a noun that represents a group of individuals, animals, or things as a single unit. It is used to describe a collection or a group of similar objects or beings. Collective nouns are singular in form but refer to multiple members of a group. For example, "team" is a collective noun that represents a group of individuals working together.

Explanation of the answer:
The correct answer is option 'C' - Family.

Why is Family a Collective Noun?
- Family is a collective noun because it represents a group of individuals who are related by blood, marriage, or adoption.
- It refers to a single unit that consists of parents and their children living together and sharing common resources, responsibilities, and emotions.
- While each family member is an individual, the term "family" collectively represents the entire group.

Examples:
- Our family enjoys spending time together.
- The Smith family went on a vacation.

Other options:
a) Women: "Women" is a plural noun that refers to multiple female individuals. It is not a collective noun.
b) Duck: "Duck" is a singular noun that represents a single bird. It is not a collective noun.
d) Children: "Children" is a plural noun that refers to multiple young individuals. It is not a collective noun.

Conclusion:
In conclusion, the noun "Family" is a collective noun as it represents a group of individuals who are related and live together as a single unit. Collective nouns are used to describe a collection or group of similar objects or beings.