[Q]: How does the sentence end?

Katrina called Carrie in a panic when the earthquake started, because

[A]: Katrina was easily rattled.

[Q]: How does the sentence end?

Gene liked to act in musicals and plays but the

[A]: musicals were hard for him as he couldn't sing.

[Q]: How does the sentence end?

Sarah asked Elena what are the best actions to increase fertility, because

[A]:
Sarah did not know the course of action.