____ is one color shade gradually progressing to another shade of the same color or to another color.

A) Gradual fill
B) Shaded fill
C) Seamless fill
D) Gradient fill

Gradient Fill

A graphical effect consisting of a smooth transition from one color to another across a surface or figure.

Color Shade

A variation in a color, determined by adding black to the color to make it darker.

Same Color

Referring to objects or elements that share an identical hue or color scheme.