In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.

A beast of burden

An animal that carries luggage

The correct answer is option 2- An animal that carries luggage.

A beast of burden refers to an animal like an ox, horse, or donkey used for carrying heavy loads or doing hard labor. It's also used to describe a person who does a lot of hard work, often physical labor.