(6, -3) is an example of a a. 1-dimensional reference point b. 2-dimensional reference point c. 1-dimensional coordinate point d. 2-dimensional coordinate point

Option D

(6, -3) is an example of a 2-dimensional coordinate point

Explanation:

In a two dimensional plane, every point is referenced with two coordinates, that is, an x-coordinate and a y-coordinate as follows: (x-coordinate, y-coordinate); in this case, the x-coordinate is 6 and the y-coordinate is -3.

segmentation=endoskeleton=backbone=coelom=tissues

it would lead to upper respiratory infections and pneumonia.