The French writer, Emile Zola, claimed that the impressionists were selling sketches that are hardly dry. Identify and example of an impressionist painting that represents Zola's description. The availability of paint in metallic tubes in the 19th century made "en plein-air" possible for impressionist artists. Identify a 20th or 21st century invention that has contributed to an innovation in art and expalin why. If you had the opportunity to have your owen or your family's portrait painted by either Monet or Renoir, which artist would you choose? Explain the reasons for your choice.