Por qué los humanos primitivos pintaban encima de algunas figuras en el arte rupestre?

Look at tribute money from brancacci. which feature of this painting contributes to the drama of the piece

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

Hey guys, i need your for my drama lesson. i dont know what to write for the monologue (in starbucks)