GIVING BRANLIEST TO ANYONE WHO ANSWRS RIGHT

Answer:
The answer is C.) Le importa
Explanation:
Let's go over the answer choices.
A.) A mi hermano les importa el medioambiente. This sentence does not make sense in Spanish. Therefore, it is incorrect.
B.) A mi hermano le importan el medioambiente. This sentence doesn't make sense in Spanish either. Therefore, this one is incorrect as well.
C.) A mi hermano le importa el medioambiente. This sentence does make sense in Spanish! Therefore, option C is correct.
Spanish is my second BEST language!
Hope I could help.
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