I’m tall when i’m young, and i’m short when i’m old. what am i?

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

Which of these forms or genres appeared in the baroque period, but  not  previous periods?

The adoption of allowed classical music to have much more effective dynamic ranges.