Which of the Following Would NOT Encourage Economic Growth in the United

Which of the following would NOT encourage economic growth in the United States?

A) The development of artificial intelligence, allowing computers to fill jobs formerly occupied by human beings.
B) A limit on the number of foreign citizens who are permitted to study in high-level research institutions in the United States.
C) The development of a better Internet search engine.
D) An improvement in shipbuilding technology that allows large cargo ships to be built at lower cost, reducing the cost of trading with other countries.