Problem: How does the sentence end?

Megan has to take more medication than Sarah because 
Answer: Megan suffers from several medical conditions.

Problem: How does the sentence end?

The man chose to sit in the chair rather than the sofa because the 
Answer: chair looked more comfortable.

Problem: How does the sentence end?

I liked doing yoga on the mat more than on the floor because the 
Answer: floor was hard.

Problem: How does the sentence end?

We could negotiate the prices, but could not do so with the terms, as the 
Answer:
terms were fixed.