Black figure painting is
a. a hard, white, translucent ceramic that is made by firing kaolin and other materials,
b. an advanced technique allowing for more detailed figures.
c. a process in which the outside rim is designed with geometric patterns consisting of horizontal and
vertical lines.
d. an ancient greek technique in which the figures appear as black silhouettes on red background.

D. An ancient Greek technique in which the figures appear as black silhouettes on red background.

Explanation:

Black-figure pottery painting is a style of painting that can be commonly seen on antique Greek vases dating from between the 7th and 5th centuries BC (although rare examples of this technique dating from the 2nd century BC exists as well). This style originated in Corinth. Figures and ornaments painted on the natural red clay surface of a vase in glossy black pigment look like silhouettes. As an example, you can see the painting shown below, depicting Heracles and Geryon from about 540 BC.

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."