The correct choice for the incomplete statement is: Choice number 2 of 3. "Distance between two points cannot be negative."
This statement is true because distance is a measure of the separation between two points, and it is always a non-negative value. Distance is a scalar quantity, and its magnitude is always positive or zero.
Distance between two points in a coordinate system cannot be negative. To determine the distance between two points, you need to find the absolute value of the difference between their coordinates (either x or y), and then subtract these absolute values. Therefore, the correct choice for the incomplete statement is: Choice number 2 of 3.