Which of the following is not painter from the impressionist period? a. vincent van gogh b. mary cassatt c. john constable d. claude monet

John Constable was not an impressionist painter because impressionist paintings include relatively small, thin, yet visible brush strokes, open composition, emphasis on the accurate depiction of light in it's changing qualities (often accentuating the effects of the passage of time), ordinary subject matter, the inclusion of movement as a crucial element 

John Constable was not a painter from the Impressionist period.