Roberto is conducting research about the ethics of confining animals in zoos. which source on his list is the most credible?

1)a site where people share stories about their experiences in zoos and their feelings about zoos
2) a research study published on a university’s website about how being in a zoo affects animals
3) an advertisement for a family vacation package that includes an amusement park and zoo
4) a blog where a zoo owner discusses everyday life working at a zoo and caring for animals

2) a research study published on a university’s website about how being in a zoo affects animals.

The most credible source on his list is option 2. With option 1, Roberto would only have access to subjective opinions, which are not a good source of evidence for research. Option 3 is an advertisement, which means that it does not contain a lot of information. It also means that it is likely to present zoos as a very desirable thing. Finally, option 4 is also likely to be subjective and biased, as the author is a zoo employee. On the other hand, option 2 comes from a research study published on a university's website, which means it is likely to be trustworthy.

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)