I believe the correct answer is B. smooth.
Jean-Auguste-Dominique Ingres was a French neoclassical
painter and the acknowledged leader of the neoclassical school in France. He
was a talented painter and draftsman known for his smooth textures in paintings
and drawings. The texture was so smooth that even appeared to be illusionistic.
By definition, the English Madrigal was the resurgence of madrigal music in England that happened during the time period of 1588 to 1627. In addition, the three forms of English madrigal includes:
Madrigal proper - mainly composed of word painting
ballet - the dance
ayre - the music is performed with our without musical accompaniment
Aperture is controlled by 'diaphragm' in optics.