Problem: How does the sentence end?

The chronic and untreatable back pain made Betty talk to her doctor Katrina about medical marijuana.
Answer: Katrina wrote a prescription for it at her next appointment.

Problem: How does the sentence end?

Laura made a giant caramel sundae for Lindsey because
Answer: Laura loved making different kinds of desserts.

Problem: How does the sentence end?

Derrick filled the bucket with water so that Joel could clean the car, because
Answer: Joel volunteered to do it.

Problem: How does the sentence end?

Craig doesn't like eating with Christopher in the school cafeteria during lunch because
Answer:
Christopher is a messy eater.