Answer:
Option B.
Step-by-step explanation:
Wanted to keep trade in China open, is the right answer.
The Qing Dynasty was the ruling dynasty of China which installed the leading modern conventional diplomatic relationships following the end of the 19th century. Following the Xinhai Revolution, the recently established Republic of China kept strategic relationships with the United States throughout the Second World War and remained a close ally of the United States. Therefore, the United States wanted to keep trade in China open.