Problem: How does the sentence end?

Working first shift is what Betty has always done where Samantha has always worked the third shift, 
OPTIONS:
- Betty works in the mornings.
- Samantha works in the mornings.
Answer: Betty works in the mornings.
sentence: Betty did Maria's nails with a special marbling effect she knew, because  OPTIONS:
- Betty had good skills.
- Maria had good skills.
complete: Betty had good skills.
Walking was easy for Sarah while Emily was in a wheelchair, so going up stairs was easy for 
OPTIONS:
- Sarah .
- Emily .
Sarah .
Input: Continue writing.

James preferred to take a bunch of pen with him for ease of carrying them other than pencil. The 
OPTIONS:
- pen is heavy.
- pencil is heavy.

Continued: pencil is heavy.
Story needs to be completed:
Benjamin takes very good care of their skin but Brian does not. 
OPTIONS:
- Benjamin looks much younger than they really are.
- Brian looks much younger than they really are.

My choice:
Benjamin looks much younger than they really are.
Problem: How does the sentence end?

Running a talent show is perfect for Mary but not Betty because 
OPTIONS:
- Mary only has minor experience with performing.
- Betty only has minor experience with performing.
Answer:
Betty only has minor experience with performing.