Answer: C) Fleet (noun).
Explanation for this question is being written.
Answer: D) Immigrants
Answer: A) Solidarity
Answer: C) Assemblage
Answer: A) Contingent
Answer: A) Team
Answer: C) Library
Answer: B) Bouquet
Answer: A) Row
Answer: D) Aggregate
Answer: D) Spectators
Answer: D) Select
Answer: D) Bunch
Answer: A) Crowd
Answer: A) Restructuring
Answer: B) Kit
Answer: D) National Security Council.
Answer: B) Shopping centre.
Answer: A) Ensemble
Answer: C) Circus