The one that is not an idiom in the Spanish language is the phrase "Mete el pie".
What is an idiom?
This is phrase or expression that has a non-literal meaning, which means, its real meaning cannot be understand using the individual meanings of words, one example of an idiom in English is "It's a piece of cake."
Which one is not an idiom in Spanish?
From the given options, "mete el pie" is not an idiom, the correct idiom is "metió la pata" which means to make a mistake.
Learn more about idiom in: https://brainly.com/question/6674805
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