Step-by-step explanation:
come on ! you don't see that right away yourself ?
what is the path from one of the points to the next to the right ?
you have to move 3 units horizontally and 3 units vertically.
so, A is correct.
what was the problem ?
don't you know the words "horizontally" and"vertically" ?
if that's the case :
you know what the horizon is ? it is the end of line of sight when you look into the far distance like at the ocean or in the desert. it is this straight "line" separating the sky from the Earth ground. it is because the Earth is a ball, that our line of sight ends somewhere, because standing on the surface of that ball the ground curves down away from us and therefore out of sight.
so, the horizon is a flat line going from left to right (or right to left).
and we call everything that is parallel to this line a horizontal line.
and "vertical" is just the same type of line just going up and down instead of left and right.
