A collection of cars is called

Fleet

Option A is correct. A collection of cars is called a fleet. This term is commonly used to describe a group of vehicles, often owned or operated by a company, organization, or government.

Explanation:
The word fleet is a collective noun, which represents a group of similar things, animals, or people considered as one entity. Collective nouns are specific and vary based on the context. For example:

• A fleet of ships refers to a collection of ships.
• A fleet of taxis or cars refers to multiple vehicles grouped together.

Collective nouns play a important role in the English language by simplifying expressions. Other examples include:

• Pack of wolves
• Flock of birds
• Herd of cattle