The color is very deep and i have the same question i go to lvs
Answer:
This portrait is by Diego Velazquez called Philip IV on Horseback. Equestrian portraits became common because it was believed that leaders looked especially powerful atop a large, powerful beast (horse)
Parietal art, hope this helps!
I think it is A. Natural Sculpture, because your question asks about a type of environment sculpture, so pretty sure it is natural from the environment. Hopefully it is right :)
Acrylic Paint was first used in the 1940's but if those are the only one's to chose from i would say 1950's
