[Q]: How does the sentence end?

Tanya looked thinner than Megan because

[A]: Tanya had lost more weight overall within the three month period.

[Q]: How does the sentence end?

I picked up a book at the store on how to find love at 50 but the

[A]: book was too old.

[Q]: How does the sentence end?

He decided to forge a blade instead of buying a knife, because the

[A]:
knife would be a lot weaker and less personal.