Step-by-step explanation:
A.The absolute value of a number is the same number regardless of its sign, in this case the absolute value of -4 is 4,because the distance from zero to number 4 remains 4 regardless of the sign it has is positive or negative.
B.The absolute value of zero is the same zero, and as the opposite of a number it has the same absolute value, but the opposite sign. The opposite of the number 0 will always be 0.,
C.The absolute value of 3 is the same as 3, and this is equivalent to the distance from zero to the number 3 regardless of the sign it has is positive or negative.