In paintings such as Et in Arcadia Ego, Poussin chose to emulate the rational order and grandly severe style of which artist?

Due to the fact that __________, pen and ink drawings like Picasso's Three Female Nudes Dancing (fig. 4.1) are difficult to execute

A. the point of the pen may catch in the paper and splatter ink B. it is difficult to control the pen C. the width of the lines the pen produces are unpredictable D. there is no variation to the pen points, so the lines are all the same

Name the row of buttons on the switcher used to select the video sources for a specific effect

a. program bus b. effects bus c. preview bus d. mix bus