Answer:
"Jumping for joy, the basketball championship was won."
Step-by-step explanation:
A dangling modifier occurs when an author introduces a modifier, but forgets its antecedent. In other words, the author presents a word that is meant to modify another word, but does not include its target. This means that the modifier is "dangling," as it has nothing to describe. This is a common mistake, but one that can make it impossible for the reader to understand the meaning of the sentence.