Final answer:
Sentence 17 does not need to be changed as there are no errors or improvements needed.
Step-by-step explanation:
To change sentence 17, we need to identify the error in the original sentence. Looking at the options provided (F, G, H, and J), we see that none of them address any issues with the sentence itself.
Therefore, sentence 17 does not need to be changed as there are no errors or improvements needed. The original sentence should remain as it is.