Problem: How does the sentence end?

I prefer spa to the pool and I find the cold water in the
OPTIONS:
- spa not relaxing at the end of the day.
- pool not relaxing at the end of the day.
Answer: pool not relaxing at the end of the day.

sentence: Flour was added into the cake but not the tart due to the OPTIONS:
- cake needing to be fluffy.
- tart needing to be fluffy.
complete: cake needing to be fluffy.

Maintaining a healthy weight was easy for Erin but not Cynthia because
OPTIONS:
- Erin ate a lot of vegetables.
- Cynthia ate a lot of vegetables.
Erin ate a lot of vegetables.

Input: Continue writing.

It took me longer to do the drawing of the house than the drawing of the tree because the
OPTIONS:
- tree was basic.
- house was basic.

Continued: tree was basic.

Story needs to be completed:
Jake has guitar music lessons on Tuesdays and trumpet music lessons on Saturday. The
OPTIONS:
- guitar he uses on Tuesdays has 5 chords.
- trumpet he uses on Tuesdays has 5 chords.

My choice:
guitar he uses on Tuesdays has 5 chords.

Problem: How does the sentence end?

The plants stopped manufacturing robots and switched to cars, as the
OPTIONS:
- robots were lucrative to produce.
- cars were lucrative to produce.
Answer:
cars were lucrative to produce.