The correct answer is D. All of above.
Gradient fills, line color and style, and rotating are all special effects that can be applied to drawing objects.
A gradient fill is a type of fill that uses two or more colors to create a gradual transition from one color to the other. Line color and style refers to the color and thickness of a line. Rotating is the process of turning an object around its center point.
These special effects can be used to create a variety of different effects, such as making an object look more three-dimensional or adding interest to a drawing.