This usually happens through the party's primaries and caucuses. It's then confirmed through a vote of the delegates at the national convention. But if no candidate gets the majority of a party's delegates during the primaries and caucuses, convention delegates choose the nominee.
I am confused on if you are asking for the answer or not, because you did put it in the question.
But yes, the correct answer is in fact D.
The four freedoms were freedom of speech, freedom of worship, freedom from want and freedom from fear.
Roosevelt compared the Four Freedoms with the Ten Commandments, the Magna Carta,and the Emancipation Proclamation.
They embodied the “right of men of every creed and every race, wherever they live” and<span>made clear “the crucial differences between ourselves and the enemies we face today.”</span>