Problem: How does the sentence end?

Steven operated the gun in the sniper team and Justin held the binoculars because 
OPTIONS:
- Steven was the shooter.
- Justin was the shooter.
Answer: Steven was the shooter.
sentence: The house of Tanya was a lot worse off than that of Felicia, by reason that  OPTIONS:
- Tanya had more money.
- Felicia had more money.
complete: Felicia had more money.
Mary preferred to use the rag over the sponge to clean dishes. The 
OPTIONS:
- rag stayed clean longer.
- sponge stayed clean longer.
rag stayed clean longer.
Input: Continue writing.

The small brush is better than the large brush for painting the trim because the 
OPTIONS:
- small brush is more precise.
- large brush is more precise.

Continued: small brush is more precise.
Story needs to be completed:
Kevin was an asset to their employer but Hunter was not because 
OPTIONS:
- Kevin was very traitorous.
- Hunter was very traitorous.

My choice:
Hunter was very traitorous.
Problem: How does the sentence end?

The sand was filtered using the sift instead of the machine because the 
OPTIONS:
- sift was simple to use.
- machine was simple to use.
Answer:
sift was simple to use.