Why is it hard to make a good flu vaccine? a) vaccines take months to make, so people have to guess which strains of flu are going to be active long in advance. b) the vaccine makers cannot hire the most qualified employees because there is so little profit in making vaccines. c) most people do not get flu shots because they like having an excuse to take a day off. d)the public is uninformed about the way vaccines work, and they do not engage in healthy habits.

A) Vaccines take months to make, so people have to guess which strains of flu are going to be active long in advance.

One of the reasons why it is challenging to deal with the flu virus is that it is particularly versatile. Therefore, it is difficult to predict which strains of flu are going to be active in advance. However, this does not mean that the flu vaccine is useless. People that are immunocompromised or that work with vulnerable populations (such as children and the elderly) particularly benefit from the vaccine, as it prevents them from spreading the virus to those in their care.

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)

a because they still enjoy the fire.

explanation: