What is improvisation when it comes to Theatre?

What is an insulae ? a) a roman building for the lower classes b) a roman building for sports c) a roman building for the wealthy

The protects the ear, collects sounds, and channels them to the middle ear a middle ear b ear drum' c front ear d outer ear

Artists best achieve contrast in a composition by: a. drawing with realism b. shading a drawing with dark and light values c. using drawing techniques like stippling and hatching d. focusing on line and shape in a drawing