c is the answer hope this help
To find the distance between two points on a number line, we just take both points turn them to being positive and add.
20 + 6 = 26 units apart.
Best of Luck!
The correct answer in this case is "we"
Us is also correct but in that case the sentence would not be an elliptical one. If you use "we" then the sentence is both correct and elliptical which fits the description of the question.