Respuesta :
The correct answer is d) to remove restrictions on Chinese immigration. The Open Door Policy purpose was invited for immigrants or refugees to move to the States for better living.
The main reason the United States announced the Open Door Policy is to ensure that U.S. businesses could operate in China. The correct answer between all the choices given is the third choice. I am hoping that this answer has satisfied your query about and it will be able to help you, and if you’d like, feel free to ask another question.