One strategy for answering questions like this is to look for answers that contradict each other. Once you find such answers, one of them has to be the right one because they can't both be true.
In this question, A and D cannot really both be true. Either the government owns industries, or people do.
In pure capitalism, industries are owned by the people, not by government. This means that D is the correct answer -- this does not usually characterize capitalism.
Of course, our US government owns some industries -- like the Post Office or (in my county) the electric company. But that's because we're not a pure capitalist economy.