Problem: How does the sentence end?

Brian put Lawrence in charge of preparing the baby's bottle, because 
OPTIONS:
- Brian knew how to do it.
- Lawrence knew how to do it.
Answer: Lawrence knew how to do it.

Problem: How does the sentence end?

Felicia got married early while Kayla didn't find love until late in life because 
OPTIONS:
- Felicia is quite beautiful.
- Kayla is quite beautiful.
Answer: Felicia is quite beautiful.

Problem: How does the sentence end?

Power was lost in the city but the town was unaffected, since the 
OPTIONS:
- city 's electric grid was underused .
- town 's electric grid was underused .
Answer: town 's electric grid was underused .

Problem: How does the sentence end?

Elena needed to have a crown put on her tooth by Megan; 
OPTIONS:
- Elena was a patient.
- Megan was a patient.
Answer:
Elena was a patient.