[Q]: How does the sentence end?

The skateboard traveled faster than the skates did because the 
OPTIONS:
- skateboard had much smoother wheels.
- skates had much smoother wheels.

[A]: skateboard had much smoother wheels.


[Q]: How does the sentence end?

To any observer, the clock would appear to be on top of the door, although the 
OPTIONS:
- clock was actually higher, due to an optical illusion.
- door was actually higher, due to an optical illusion.

[A]: door was actually higher, due to an optical illusion.


[Q]: How does the sentence end?

It was more common for the bike to break that the tricycle, because the 
OPTIONS:
- bike had excellent craftsmanship.
- tricycle had excellent craftsmanship.

[A]:
tricycle had excellent craftsmanship.