Which part of this excerpt from president franklin d. roosevelt's "four freedoms" speech demonstrates the use of logos?

let us say to the democracies: "we americans are vitally concerned in your defense of freedom. we are putting forth our energies, our resources and our organizing powers to give you the strength to regain and maintain a free world. we shall send you, in ever-increasing numbers, ships, planes, tanks, guns. this is our purpose and our pledge."

(a) in fulfillment of this purpose we will not be intimidated by the threats of dictators that they will regard as a breach of international law or as an act of war our aid to the democracies which dare to resist their aggression.

(b) and when the dictators, if the dictators, are ready to make war upon us, they will not wait for an act of war on our part. they did not wait for norway or belgium or the netherlands to commit an act of war.

(c) their only interest is in a new one-way international law, which lacks mutuality in its observance, and, therefore, becomes an instrument of oppression.

the happiness of future generations of americans may well depend upon how effective and how immediate we can make our aid felt. no one can tell the exact character of the emergency situations that we may be called upon to meet. (d) the nation's hands must not be tied when the nation's life is in danger.

(e) yes, and we must all prepare–all of us prepare–to make the sacrifices that the emergency– almost as serious as war itself–demands. whatever stands in the way of speed and efficiency in defense–in defense preparations of any kind–must give way to the national need.

In just over one hundred years, between 1701 and 1810, 252,500 enslaved africans were brought to barbados—an island that occupies only 166 square miles (making it, today, one of the smallest countries in the world). the english then set out to conquer more sugar islands, starting with jamaica, which they took from spain in 1655. in the same period that the 252,500 africans were brought to barbados, 662,400 africans were taken to jamaica. thus, sugar drove more than 900,000 people into slavery, across the atlantic, to barbados and jamaica—and these were just two of the sugar islands. the english were eagerly filling antigua, nevis, saint kitts, and montserrat with slaves and sugar mills. they took over much of dutch guiana for the same reason. seeing the fortunes being made in sugar, the french started their own scramble to turn the half of the island of hispaniola that they controlled (which is now haiti), as well as martinique, guadeloupe, and french guiana (along the south american coast near dutch guiana), into their own sugar colonies, which were filled with hundreds of thousands more african slaves. by 1753, british ships were taking average of 34,250 slaves from africa every year, and by 1768, that number had reached 53,100. –sugar changed the world, marc aronson and marina budhos how do the authors use historical evidence to support their claim? x(a) they use secondary sources to show how french and english monarchs were indifferent to enslaved people. x(b)they use secondary sources to show that enslaved people often fought for their freedom after arriving in the caribbean. the answer is: (c)they use facts from primary sources to show how countries increased the number of enslaved people to produce more sugar. x(d)they use primary source interviews to show that countries could make more money in trading sugar without using enslaved people.