[Q]: How does the sentence end?

Jason looked less beautiful today than Ryan because 

[A]: Ryan was competing in a beauty pageant.


[Q]: How does the sentence end?

Brett gave Kyle the mop and told them to mop the floor, because 

[A]: Brett usually did more work.


[Q]: How does the sentence end?

Samantha's recent health has been a very big problem unlike Monica's because 

[A]:
Samantha was diagnosed with cancer.