Based on the information in the passage, which combination is least likely to result in a backover accident?

a compact sedan and a tall, twenty-year-old man is the correct answer. The passage states the smaller the person and the larger the vehicle, the more likely a backover; of all of the choices, this is the one in which the vehicle is smallest and the person the biggest, therefore it is the scenario that is least likely to result in a backover.

a full-size sedan and a twenty-year-old man

Explanation:

Generally speaking, the larger the vehicle, the larger the blind spot. The vehicle is a compact car or a small family car. According to British rules, it is bigger than a subcompact car, but it is smaller than a middle size car. If the man is tall, that can also lessen the chance of a backover incident.