The art of using and understanding space involves __ a. varying the size of objects or subjects so that some are smaller than others and the illusion of depth is created. b. showing a change from light to dark in an object by darkening areas that would have a shadow. c. placing part of one shape or form in front of another. d. all of the above. Please select the best answer from the choices provided A B D

The best answer is D. All of the above.<br /><br />The art of using and understanding space involves varying the size of objects or subjects so that some are smaller than others and the illusion of depth is created (option A), showing a change from light to dark in an object by darkening areas that would have a shadow (option B), and placing part of one shape or form in front of another (option C). All of these techniques are used to create the illusion of depth and three-dimensionality in a two-dimensional space.