Gerrit Rietveld's famous Red and Blue Chair is a summation of which principle of design?

Which two abstract expressionists showed the way to pop art?

A. Jackson Pollock and Willem de Kooning B. Jasper Johns and Robert Rauschenberg C. Mark Rothko and Helen Frankenthaler D. Kenneth Noland and Morris Louis

In bright sunlight, what can you use to allow the sun to serve simultaneously as both key and fill lights?

A) large diffusion filter B) powerful spotlight C) green gel D) cookie E) reflector