Question

On a number line, the distance from zero to -7 is 7 units.
A. |-7| = 7
B. |-7| = -7
C. 72 = 49
D. 0 + 7 = 7

Answer 1

|-7| = 7
the modulus | | means the absolute value of the number

Answer 2

A. A distance is always positive, so we put it in abs so that we are sure it's going to be positive, even though it's calculated on negative numberz

B is wrong.
C is absolutely no sense.
D is just not the answer, you'd have 0-7, which is -7, but it kinda invalidates my premises.