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Which of these is a consistent periodic pulse separated into equivalent intervals of time?

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 baroque artist from a protestant country did not produce work for the catholic church? a. michelangelo b. rembrandt van rijn c. peter paul rubens