What aspect does not provide context in a portrait?

a. color
b. action
c. environment
d. movement

D. Movement is the aspect that does not provide context in a portrait.
Color, action, and environment all tell us something about the context within the painting, as well as outside of it - the painter's context for painting his artistic work. On the other hand, movement doesn't really tell us much about such circumstances.

Inform should be the answer