Problem: How does the sentence end?

The scene at the cafe was no longer fun for the girl, so she started hanging out at the library, because the 
OPTIONS:
- cafe had an accepting crowd.
- library had an accepting crowd.
Answer: library had an accepting crowd.
sentence: I really hated the flavor of corn more than pie, because the  OPTIONS:
- corn was always bland.
- pie was always bland.
complete: corn was always bland.
the demand for the products in the market exceeded the products available, the 
OPTIONS:
- demand was too high.
- products was too high.
demand was too high.
Input: Continue writing.

Being physically intimidating came naturally to Kayla but not Sarah because 
OPTIONS:
- Kayla was not big or very muscular.
- Sarah was not big or very muscular.

Continued: Sarah was not big or very muscular.
Story needs to be completed:
The Ukulele is being taught to Matthew by Justin in class. 
OPTIONS:
- Matthew must be the person teaching.
- Justin must be the person teaching.

My choice:
Justin must be the person teaching.
Problem: How does the sentence end?

Kevin would talk far more often at parties than Aaron for the reason that 
OPTIONS:
- Kevin was way more introverted.
- Aaron was way more introverted.
Answer:
Aaron was way more introverted.