Question

What number on the number line represents ground level?

0
-1
-2
-3
-4
-5
-6​

Answer 1

0 represents ground level.

Explanation:

0 on the number line represents ground level. Based on the photo, the 0 is in between the underground and the space above. The answer cannot be one of the negative numbers because those are all shown to be underground in the photo.