Respuesta :
It would be the third sentence you've got there. I was actually leaning more towards the dinosaur grandma thing, but that's actually a metaphor.
Hope this helped. :)
Idioms are literary expressions used as figurative language. Buying appliances and cars seems to raise a red flag showing the usage of an idiom. Thus, option C is correct.
What are idioms?
Idioms are the phrases used in the sentences that do not have a literal meaning when the words are taken as literal definitions but as a whole make sense. The meaning of the individual words is not taken into the consideration.
In the third sentence, the use of the phrase raises a lot of red flags is an idiom that actually doesn't mean to raise a flag but indicates a potential danger or harm that may arise if the situation takes place.
Therefore, option C. raises a lot of red flags is an example of an idiom.
Learn more about idioms here:
https://brainly.com/question/6674805
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