Problem: How does the sentence end?

To heal properly, the bandage had to be removed from the cut and replaced with ointment, as the 
OPTIONS:
- bandage was potent in curing the infection.
- ointment was potent in curing the infection.
Answer: ointment was potent in curing the infection.

Problem: How does the sentence end?

I was trying to type on my iPhone screen through my wool knit glove, but struggled to type since the 
OPTIONS:
- glove was slippery.
- screen was slippery.
Answer: screen was slippery.

Problem: How does the sentence end?

Monica would rather stay home reading whilst Felicia preferred to go to a party as 
OPTIONS:
- Monica was very extroverted.
- Felicia was very extroverted.
Answer: Felicia was very extroverted.

Problem: How does the sentence end?

Carrie signed up for an improv group while Christine did not, because 
OPTIONS:
- Carrie had always really enjoyed acting.
- Christine had always really enjoyed acting.
Answer:
Carrie had always really enjoyed acting.