Final answer:
The technique used to create the described piece of pottery is black-figure painting, which involves using a slip to create black figures on a red background.
None of the given options is correct
Step-by-step explanation:
The technique used to create the pottery described is the black-figure painting, which is characterized by black silhouette figures against a red background. This style was developed by the Corinthians in the seventh century BCE and went through a firing process three times to achieve the red and black colors. The slip used in this technique is a thin mixture of clay and water, serving as a sort of paint that would turn black or red depending on the kiln's oxygen level.
The black figures on the vases were detailed by incising lines into the surface and could be accentuated with additional colors like red and white pigments.
None of the given options is correct