[Q]: How does the sentence end?

Lindsey never suffered from a concussion after fighting but Maria did because 
OPTIONS:
- Lindsey always used a helmet.
- Maria always used a helmet.

[A]: Lindsey always used a helmet.
QUES: Continue writing.

Monica frequently avoided hanging out with Tanya, because 

OPTIONS:
- Monica was an isolation who just wanted to be alone.
- Tanya was an isolation who just wanted to be alone.
+++++++++
ANS: Monica was an isolation who just wanted to be alone.
Problem: How does the sentence end?

The person went to speak through the mic and not the loudspeaker since the 
OPTIONS:
- mic was working.
- loudspeaker was working.
Answer: mic was working.
sentence: Hunter asked Derrick to make the fresh chips and dip for the birthday party since  OPTIONS:
- Hunter just bought potatoes.
- Derrick just bought potatoes.
complete: Derrick just bought potatoes.
The water was just right for Felicia but too cold for Christine, so 
OPTIONS:
- Felicia got out of the pool.
- Christine got out of the pool.
Christine got out of the pool.
Problem: Continue the following story.

Robert's clothes were dirty while Michael's were clean because 
OPTIONS:
- Robert had a broken washing machine.
- Michael had a broken washing machine.
Here's how I want to continue it:
Robert had a broken washing machine.