Emily Dickinson sometimes used traditional iambic meter or rhyme

Which of the following is not one of the three basic types of opera?

a. Opera buffa b. Opera libretto c. Operetta d. Opera seria

In oil painting, thin veils of translucent color applied over a layer of opaque paint are known as:

A. glazes. B. synthetics. C. tesserae. D. primers. E. gesso.