Answer:
B. It provided for equal trade rights among nations in China.
Step-by-step explanation:
The Open Door policy refers to the policy that would allow for a system of trade in China given to all countries or nations equally. Secretary of State John Hay proposed the open door policy for china in the 1899. This policy gives opportunity to all nations of the world to reach Chinese market. The Open door policy formulated in order to prevent European and Japanese monopoly of Chinese trade and markets.