Problem: How does the sentence end?

Eric told Derrick to take the bag of seeds and plant them in the gardens because 
OPTIONS:
- Eric isn't doing anything.
- Derrick isn't doing anything.
Answer: Derrick isn't doing anything.
sentence: Ben was choosing between a clothing business and a fitness business. He ended up opening the  OPTIONS:
- fitness business because it was healthy.
- clothing business because it was healthy.
complete: fitness business because it was healthy.
The woman covered the carpet in the living room with a rug, because the 
OPTIONS:
- carpet was stained.
- rug was stained.
carpet was stained.
Input: Continue writing.

Rebecca asked Felicia how to become a professional wedding DJ but 
OPTIONS:
- Rebecca didn't know how.
- Felicia didn't know how.

Continued: Felicia didn't know how.
Story needs to be completed:
The frosting slid off the cake but stayed on the cupcake, as the 
OPTIONS:
- cake had a poor surface to apply it on.
- cupcake had a poor surface to apply it on.

My choice:
cake had a poor surface to apply it on.
Problem: How does the sentence end?

Elena needed to have a crown put on her tooth by Megan; 
OPTIONS:
- Elena was a patient.
- Megan was a patient.
Answer:
Elena was a patient.