The answer is D. Hope this helps:)
It believe it's the Pythagorean Theorem, named after Pythagoras in ancient Greece 2,500 years ago
In the 1960 Presidential elections, John F Kennedy became the democratic candidate despite his Catholicism.
This was surprising since Anti-Catholic sentiment was pretty high in mainstream American society at the time.
This was also seen as a reason why his presidential win was the closest in the history of the United States with a margin of just 118,000 out of 69 million votes.
