What was the purpose of the open door policy?

a. to provide the united states with access to trade with china

b. to make sure that the united states would be open to all world nations

c. to make sure that all world ports would be open to the united states

d. to provide china with access to trade with the united states

The purpose of the Open Door policy was to provide the United States with access to trade with China.

Option A

Explanation:

In order to promote trade with China U.S. proposed Open Door policy in 19th century. This policy essentially professed that trade in China will be open to all the countries equally.

In 1899, John Hay who was U.S. Secretary of State had send the Open Door Note to all the major powers of Europe proposing this policy.  

This policy was professed for avoiding the situation where any one power or country would establish its control over the trade with China. Hence the motive or purpose behind this policy was ensuring that U.S. has access to the trade with China.

a is the final : )

the answer is b.india