The answer is C because there is no evidence of a rhyme scheme
If you are trying to correct it, the answer would be...
While visiting Washington, D.C., we went to the Lincoln Memorial and the Vietnam Memorial.
The root word bi means two.
One example of this root word being used is the word bicycle.
The root word is used so as to tell people that this bicycle has two wheels.
A unicycle is a riding device that has one wheel.