The author believes that Charles Goodyear was a dedicated scientist who kept improving on his work. Which sentence from the article best supports this statement?

А "Another scientist who made an accidental discovery was Charles Goodyear."

B "He tried to change the rubber in countless ways, but each attempt
disappointed him."

C "One day, Goodyear spilled a mixture containing natural rubber onto a hot
stove."

D "Goodyear patented a process for making vulcanized rubber in 1844 and then
sold his product to manufacturers."

answer; i believe that the correct answer is (north and south);

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)

to persuade readers which is answer c