An analytical essay discussing how helicopter battlefield rescues during the vietnam war led to domestic helicopter emergency response is likely to use what organizational structure?
a. definition
b. argument
c. cause and effect
d. comparison and contrast

d

explanation:

a paragraph can have more than 2 main ideas because one paragraph matters on how many sentences there are.

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.