[Q]: How does the sentence end?

The dog could not see that the pole is behind the fence because the

[A]: pole is shorter.

[Q]: How does the sentence end?

Samuel had an eating disorder but Jason was normal.

[A]: Samuel had to visit a doctor to be helped.

[Q]: How does the sentence end?

Dennis backed Nelson into the small corner during the heated argument because

[A]:
Dennis was dominant.