[Q]: How does the sentence end?

Angela stared bewildered as Katrina explained you could use vitamin C to lighten hair dye because 
OPTIONS:
- Angela was knowledgeable.
- Katrina was knowledgeable.

[A]: Katrina was knowledgeable.


[Q]: How does the sentence end?

Matthew knew how to cure a bleeding nose but Lawrence did not because 
OPTIONS:
- Matthew had a limited  knowledge of first aid.
- Lawrence had a limited  knowledge of first aid.

[A]: Lawrence had a limited  knowledge of first aid.


[Q]: How does the sentence end?

Jennifer would outgrow Sarah in a matter of a few months even though 
OPTIONS:
- Jennifer was younger.
- Sarah was younger.

[A]:
Jennifer was younger.