Answer: C. The representation of subtle changes in light
Step-by-step explanation:
This is an example of an impressionist painting because it has the representation of subtle changes in light which is also one of the main characteristics of impressionism.
It started in France in the 19th century and it considered thin and yet visible brush strokes as we can see in this painting.
B) Is not correct because realist and other artists were also painting nature but in a different way.
A) is not correct because it is not a valid reason that is representing impressionism.
D) Is not correct because like answer A) it is not requiring a valid reason for impressionism representation.