Where does the vanishing point sit?
a: on the object you are drawing
b: on an orthogonal line
c: on a vertical line
d: on the horizon line

D: On the horizon line

Explanation:

Note the point where most lines converge. This is your vanishing point, which is located on the horizon line. When an object has only one vanishing point, its perspective is referred to as one-point perspective.

doric, ionic, and corinthian, and there is no picture