The correct answer should be D. energy.
He was one of the first abstract painters and there wasn't much pathos there, not many emotional things. Lines and shapes were often use but they weren't the aim of it, rather just a part of the form. He portrayed energy flowing, moving, changing, things like that were fascinating to him.
The correct answer is A.
During the late 1800's, America production was increasing greatly due to the development of interchangeable parts. Now that many businesses were able to mass produce goods, they needed buyers to consume them to ensure that the price of the goods did not decrease.
America wasn't worried about the spread of communism or the need for immigrant workers until the 20th century (hence why B and D are wrong).
He found new land or so he thought.
