The team did better running on the track than on the field because the 
OPTIONS:
- track was more slippery.
- field was more slippery.
field was more slippery.

Randy explained to his friend Hunter the rules to Australian Football.  
OPTIONS:
- Randy was intrigued.
- Hunter was intrigued.
Hunter was intrigued.

Maintaining a healthy weight was easy for Erin but not Cynthia because 
OPTIONS:
- Erin ate a lot of vegetables.
- Cynthia ate a lot of vegetables.
Erin ate a lot of vegetables.