Problem: How does the sentence end?

I tried to pour the new paint into the old bucket, but it didn't fit because the 
OPTIONS:
- paint was too small.
- bucket was too small.
Answer: bucket was too small.

Problem: How does the sentence end?

Jeffreys journal was lost in the fire before Steven could arrive to help put it out.  
OPTIONS:
- Jeffrey stood there and watched it burn.
- Steven stood there and watched it burn.
Answer: Jeffrey stood there and watched it burn.

Problem: How does the sentence end?

Samantha owns a rat, as a pet, but Amy owns a cat due to 
OPTIONS:
- Samantha only liking small animals.
- Amy only liking small animals.
Answer: Samantha only liking small animals.

Problem: How does the sentence end?

The woman did not recognize the painting but was familiar with the drawing because the artist of the 
OPTIONS:
- painting was unknown.
- drawing was unknown.
Answer:
painting was unknown.