The correct answer is <span>a. Even the adults were jumping and splashing like children, who usually don't play much.
The clause "who usually don't play much" refers to adults and not children. Here however, due to misplacement, it makes it seem as if the children are the ones who don't play much.</span>
The answer is C. It makes the poem sound more like a conversation between the poet and reader.
Details about the topic that convince the reader to look at your point of view.