Answer:
Son las chicas means are the girls.
Explanation:
If you are actually asking the question are the girls then I have no idea how to answer that.
Anyways I hope this helps!!
"¿ son las chicas?" is an incomplete question. So, to complete it you would need to add an adjective or description word to make it make sense.
For example,
¿ son las chicas feliz?
¿ son las chicas triste?
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