Question

what is an idiom? (1 point)
an expression whose meaning cannot be figured out from the literal meanings of the words but has a figurative meaning as a whole
the use of descriptive language that creates a vivid picture in the readers mind and may evoke an emotional response
when an animal, object, or idea is given human characteristics
a figure of speech that implies a comparison between seemingly unlike things without using \like\ or \as\

Explanation:

An idiom is a set expression. Its meaning isn't clear from the literal words. For example, "break a leg" (meaning good luck) isn't about actually breaking a leg. The other options describe other literary devices: the second is imagery, the third is personification, and the fourth is a metaphor.

Answer:

an expression whose meaning cannot be figured out from the literal meanings of the words but has a figurative meaning as a whole