Problem: How does the sentence end?

Christine is teaching Rebecca how to ride a horse, because 
OPTIONS:
- Christine is a great student.
- Rebecca is a great student.
Answer: Rebecca is a great student.
sentence: Buying new office supplies and storage boxes was fun for Samuel but not Joel, since  OPTIONS:
- Samuel loved to organize.
- Joel loved to organize.
complete: Samuel loved to organize.
Tanya was really mad at Mary and tried to ignore her, because 
OPTIONS:
- Tanya was hurt.
- Mary was hurt.
Tanya was hurt.
Input: Continue writing.

For their one year anniversary, Alexandria's boyfriend bought her a quartz ring and not an emerald one because the 
OPTIONS:
- quartz was available.
- emerald was available.

Continued: quartz was available.
Story needs to be completed:
The woman found it easier to read the slides than the notes because the 
OPTIONS:
- slides were written in large print.
- notes were written in large print.

My choice:
slides were written in large print.
Problem: How does the sentence end?

Katrina spoke English as a first language, while Elena's native tongue was Spanish, because 
OPTIONS:
- Katrina grew up in Argentina.
- Elena grew up in Argentina.
Answer:
Elena grew up in Argentina.