Final answer:
In the sentence "Yo toco la guitarra en una banda", the underlined word "banda" means band.
Step-by-step explanation:
In the sentence "Yo toco la guitarra en una banda", the underlined word "banda" means band. In this context, a band refers to a group of musicians who play instruments together. It could be a musical group performing together or a group of friends who play music for fun.
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