Respuesta :
The appropriate verb that fits into the sentence will be B. preocupada.
What is a verb?
A verb is a part of speech that's used to denote that an action has been performed in a sentence.
In this case, the person was worried because his friend isn't answering the phone.
Therefore, the correct option is B.
Learn more about verb on:
brainly.com/question/1718605
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