What did the passage of the Platt Amendment demonstrate about U.S. relations with
Cuba?

Considering the available options, the passage of the Platt Amendment demonstrate U.S. relations with
Cuba to be that "the United States acknowledged Cuba's independence, but recognized that there was still important American interest in Cuba."
Platt Amendment was an agreement signed between the United States and Cuba which stipulated eight provisions that Cuba must fulfill following the Spanish American War before the United States would end its war activities in Cuba.
The Platt Amendment was signed in 1901 and was named after Senator Orville Platt of Connecticut.
One of the major summaries of the Platt Amendment is that the United States acknowledged Cuba's independence, but recognized that there was still crucial American interest in Cuba.
This situation protects Cuba from external influence from Europe and internal tyranny from Cuban citizens against the Cubans.
Generally, it is believed that the United States made the Platt Amendment protect its commercial interests in Cuba.
Hence, in this case, it is concluded that the correct answer is option B.
Learn more about the Platt Amendment here: https://brainly.com/question/13757907