Finding the One-Word Substitute for a Professional Driver

The question asks us to find a single word that can replace the phrase "A person whose job is to drive people around in a car". This is a common type of vocabulary question that tests your knowledge of specific terms.

Let's look at the options provided and understand what each word means:

• Chauffeur: This word refers to a person employed to drive a private or hired car. This definition directly matches the description given in the question.
• Operator: This is a general term for someone who operates a machine, system, or service. While a driver operates a car, the term 'operator' is too broad and doesn't specifically mean someone employed to drive others in a car.
• Hacker: This word typically refers to a person who uses computers to gain unauthorized access to data or systems, or someone who is an expert in programming and solving problems with a computer. It has no relation to driving a car.
• Motorist: This term refers to a person who drives a car. However, it doesn't necessarily imply that driving is their job or that they drive other people around. It simply means someone who drives their own or any car.

Comparing the definitions, the word that best fits the description "A person whose job is to drive people around in a car" is Chauffeur.

Therefore, the correct one-word substitute is Chauffeur.