Finish the following sentence with the best choice: How can you do sit ups without straining your neck?

Choices:
- If you'll press your tongue against the roof of your mouth while doing sit ups it will stop you from straining your neck.
- If you'll press your foot against the roof of your mouth while doing sit ups it will stop you from straining your neck.

Answer:
If you'll press your tongue against the roof of your mouth while doing sit ups it will stop you from straining your neck.