Hiking is a favorite pasttime of Cynthia but not Natalie because 
OPTIONS:
- Cynthia had no desire to see a woodpecker.
- Natalie had no desire to see a woodpecker.
Natalie had no desire to see a woodpecker.

Counting the ducks was harder than counting the chickens. That's because there were a lot fewer 
OPTIONS:
- ducks .
- chickens .
chickens .

Craig owned several saltwater fish while William did not, so 
OPTIONS:
- Craig had a very large tank for the fish.
- William had a very large tank for the fish.
Craig had a very large tank for the fish.