Answer: D.
Explanation: The U.S. sends people to discuss environmental issues with China.
John Maynard Keynes (A), Adam Smith (C), and Karl Marx (D) are all famous historical figures. However, Sigmund Freud was not an economist but instead was a famous psychologist.
The answer is A. Hope it helps
Answer:
Although I am not 100% sure I would say that c is the correct answer.
Explanation:
<span> C. because he admired president Lincoln and his effort</span>