Strange question of html challenge

Question

Which <svg> element is used to create any shape that consists of straight lines only?
Why on this question is no answer - line? Or path?

Answer 1

But for answer only 4 letters are provided
I see this question when I play, not learn

Answer 2

polyline is the answer.
The correct answers from a challenge are viewable once the challenge has completed.
Also, information about polyline can be found in the HTML course: HTML5 section, SVG chapter, page 4 of 5.

Answer 3

Have you tried clicking on a Completed challenge? Below the score (two columns of five green checkmarks and/or red X's) there is an option to view the Correct Answers.