[Q]: How does the sentence end?

William could only climb beginner walls while Jason climbed advanced ones because 

[A]: William was very weak.


[Q]: How does the sentence end?

Starting a travel blog was more manageable for Mary than Amy because 

[A]: Mary was an expert photographer.


[Q]: How does the sentence end?

The clothing Amy wears every day is cheaper than that of Elena because 

[A]:
Elena is wealthy.