[Q]: How does the sentence end?

Erin was itching all over so Jessica carefully applied ointment and calamine to the areas. 
OPTIONS:
- Erin treated poison ivy.
- Jessica treated poison ivy.

[A]: Jessica treated poison ivy.
QUES: Continue writing.

I wrote a paper on helicopters in response to another paper I had written about hot air balloons; overall, I find the 

OPTIONS:
- helicopters to be too fragile.
- balloons to be too fragile.
+++++++++
ANS: balloons to be too fragile.
Problem: How does the sentence end?

The woman believed the ruby was more valuable than the emerald, because the 
OPTIONS:
- ruby looked fake.
- emerald looked fake.
Answer: emerald looked fake.
sentence: The man told us that Michael had more success than Steven because  OPTIONS:
- Michael studied very hard.
- Steven studied very hard.
complete: Michael studied very hard.
The flooring in Victoria's house was cracking up unlike Erin's house since 
OPTIONS:
- Victoria 's foundation is sound.
- Erin 's foundation is sound.
Erin 's foundation is sound.
Problem: Continue the following story.

The dog would only sleep on the bed and not the sofa because the 
OPTIONS:
- bed was comfy.
- sofa was comfy.
Here's how I want to continue it:
bed was comfy.