Karl Marx wrote

Karl Marx wrote Das Kapital, a three-volume work on political economy. It is considered one of the most influential works of political philosophy ever written.

Asian Drama is a book by Gunnar Myrdal, published in 1968. It is a study of the economic development of Asia.

Emma is a novel by Gustave Flaubert, published in 1857. It is considered one of the greatest novels ever written.

The Good Earth is a novel by Pearl S. Buck, published in 1931. It is a story about a Chinese peasant family.

The correct answer is: C. Das Kapital