The best way to revise this sentence is to change it to become the "Sarah saw a bee floating in the pool <span>trying to dry its wings</span>" sentence. The previous sentence has an ambiguous meaning to the sentence. In the previous sentence, there is a confusion about who is floating in the pool and the revision will clear this confusion.
Answer: Sarah saw a bee floating in the pool trying to dry its wings.
This sentence is the one that expresses the idea more clearly. The other options follow an order that can be confusing for the reader. Word order is an important element of sentence construction. Ignoring this element can result in confusing, unclear sentences that do not accurately convey the intended meaning.