the answer is: <span>the third variable problem
</span><span>the third variable problem refers to the additional factor that could mistakenly lead to the false conclusion in determining the causal relationship between two other factors.
Other example:
There was a study that shown that eating soy bean leads to the development of breast cancer. But if we take a look at East Asian population who consume more soy beans compared to western people, East Asian population have far less cancer cases.
In this case, we can say that Genetic is a t</span>hird variable problem
"It made Cuba a protectorate of the United States" is the one among the following choices given in the question that <span>was the effect of the Platt Amendment on U.S. relations with Cuba. The correct option among all the options that are given in the question is the second option or option "B". </span>