Hello There,
There are a few impressionists who are considered "purest or pure."
1 - Monet
2 - Sisley
3 - Morisot
They are each considered pure as Wikipedia puts it "Because of their consistent pursuit of an art of spontaneity, sunlight and color."
Best Of Luck,
- Kai -
I believe it’s strings (sorry if I’m wrong)
A)............... correct me if I'm wrong