Problem: How does the sentence end?

Monica wanted to use a vacuum to clean the floor, but Victoria wanted to use a broom. 
OPTIONS:
- Monica cleaned the floor much slower.
- Victoria cleaned the floor much slower.
Answer: Victoria cleaned the floor much slower.

Problem: How does the sentence end?

Ian was asked by Kevin to help with their taxes because 
OPTIONS:
- Ian was a successful, trained accountant.
- Kevin was a successful, trained accountant.
Answer: Ian was a successful, trained accountant.

Problem: How does the sentence end?

To clean my floors I use a broom and sometimes also use a mop, since I want to be thorough today I am using the 
OPTIONS:
- broom on the floor.
- mop on the floor.
Answer: mop on the floor.

Problem: How does the sentence end?

The crowd at the gig could barely hear the singer because the 
OPTIONS:
- crowd was too loud.
- singer was too loud.
Answer:
crowd was too loud.