Concept:A collective noun is a word used to describe a group of animals or things. Each animal has its own correct collective noun.
Explanation:- A group of ducks is correctly called a flock, a raft, or a team.
- The word "clutch" refers to a group of eggs, not a group of ducks.
- Option A: "Host of angels" is correct.
- Option B: "Congress of baboons" is correct.
- Option D: "Shoal of fish" is correct.
Therefore, option C uses the wrong collective noun.
Answer:Option C (Clutch of ducks) is the error.