[Q]: How does the sentence end?

Megan wanted a pet rabbit more than Lindsey because

[A]: Lindsey had a lack of understanding of rabbits.

[Q]: How does the sentence end?

Keratin made Kenneth's hair shinier than Matthew's, because

[A]: Matthew ate a lot of junk food.

[Q]: How does the sentence end?

The bird nest is a lot higher than the doghouse because the

[A]:
nest is in the tree.