Problem: How does the sentence end?

The new PC Billy bought for himself would not fit in his old backpack, the
OPTIONS:
- backpack was too narrow.
- PC was too narrow.
Answer: backpack was too narrow.

Problem: How does the sentence end?

Elena was often lightheaded while Emily had great fortitude, so
OPTIONS:
- Elena was prone to fainting .
- Emily was prone to fainting .
Answer: Elena was prone to fainting .

Problem: How does the sentence end?

Christopher made the perfect scrambled egg for Derrick, so
OPTIONS:
- Christopher was very proud of their creation.
- Derrick was very proud of their creation.
Answer: Christopher was very proud of their creation.

Problem: How does the sentence end?

Jason left the roofing of his house to be applied by Hunter as
OPTIONS:
- Jason lacked professional experience.
- Hunter lacked professional experience.
Answer:
Jason lacked professional experience.