[Q]: How does the sentence end?

I prefer the old cell phones compared to new cell phones because the 

[A]: new cell phones are more prone to defects.


[Q]: How does the sentence end?

Lawrence was very hesitant when speaking to Steven, because 

[A]: Lawrence always tended to say something wrong.


[Q]: How does the sentence end?

Katrina was able to remove the mildew from the tub but not Christine because 

[A]:
Christine used hand soap.