While she was floating in the pool, Sarah saw a bee trying to dry its wings
Explanation:
adding "While she was" at the beginning of the sentence tells the reader that Sarah was the one floating in the pool, whereas the original sentence doesn't clearly state whether it was Sarah or the bee who was in the pool.
paralympic games are like the olimpics but have disabled contestants, these improvements are changing people's lives, these peices of equiptment are expensive.