Problem: How does the sentence end?

The woman determined the smell in the kitchen was coming from the potatoes instead of the onions, because the 
OPTIONS:
- Potatoes were rotten.
- Onions were rotten.
Answer: Potatoes were rotten.

Problem: How does the sentence end?

When donating blood, I don't look at the needle until I get my cookie, and it's always great to see that the 
OPTIONS:
- cookie is quite large.
- needle is quite large.
Answer: cookie is quite large.

Problem: How does the sentence end?

Amy wore only synthetic fabrics whereas Kayla leaned towards natural ones because 
OPTIONS:
- Amy preferred being conscientious.
- Kayla preferred being conscientious.
Answer: Kayla preferred being conscientious.

Problem: How does the sentence end?

They banned the shirts from the venue but allowed the jackets.  The 
OPTIONS:
- shirts were considered just right for the occasion.
- jackets were considered just right for the occasion.
Answer:
jackets were considered just right for the occasion.