The correct answer is D) Their population size is similar.
The statement that best explains why Florida and New York have the same number of electoral votes is that their population size is similar.
The electoral college is the one that decides the election of the President of the United States. Each state has a number of electoral votes depending on the size of its population. The largest the population on a state, the most number of electoral votes it has. That is why in this case, the statement that best explains why Florida and New York have the same number of electoral votes is that their population size is similar.
