Answer:
Correct answer is d. The Senate must ratify treaties with a 2/3 majority.
Explanation:
Only option D is correct, because according to Constitution senate is approving treaties signed by executive branch with at least two thirds of votes. The last rejected treaty was Convention on the Rights of Persons with Disabilities, which didn't had 2/3 majority, as 61 senators vote for and 38 against it.
The open door policy was received with almost universal approval in the united states and for more than 40 years it was a cornerstone of america foreign policy in east Asia.
It established the United States as a major power in the Western Hemisphere.
