William's teeth were healthier than Nelson's teeth, because 
OPTIONS:
- William didn't care about maintaining good dental care.
- Nelson didn't care about maintaining good dental care.
Nelson didn't care about maintaining good dental care.

I tried to convert my friend from an omnivore diet to a vegan diet because I think the 
OPTIONS:
- vegan diet is unethical.
- omnivore diet is unethical.
omnivore diet is unethical.

Erin was much less aggressive than Megan, so 
OPTIONS:
- Erin had to worry about getting in fights.
- Megan had to worry about getting in fights.
Megan had to worry about getting in fights.