Input: Continue writing.

Katrina stayed behind Carrie when they were climbing the hill because 
OPTIONS:
- Katrina was quite slow.
- Carrie was quite slow.

Continued: Katrina was quite slow.


Input: Continue writing.

While any child could play with the toys cars there was an age requirement established for playing with the marbles because the 
OPTIONS:
- cars were safe.
- marbles were safe.

Continued: cars were safe.


Input: Continue writing.

Emily asked her sister Sarah if she needed any tampons or pads from the store, but 
OPTIONS:
- Emily didn't because she had switched to using menstrual cups.
- Sarah didn't because she had switched to using menstrual cups.

Continued: Sarah didn't because she had switched to using menstrual cups.


Input: Continue writing.

The splinter hurt worse than the thorn did because the 
OPTIONS:
- splinter was embedded deeper in the skin.
- thorn was embedded deeper in the skin.

Continued:
splinter was embedded deeper in the skin.