Final answer:
The horizontal distance between points A and B is 16 units, and the vertical distance is 8 units.
Step-by-step explanation:
To find the horizontal distance between points A(-4,5) and B(12,13), we calculate the difference in their x-coordinates: 12 - (-4) = 16 units.
To find the vertical distance, we calculate the difference in their y-coordinates: 13 - 5 = 8 units. Therefore, the horizontal distance is 16 units and the vertical distance is 8 units. The correct option is a) Horizontal: 16 units, Vertical: 8 units.