Dreary and weary is an adjective
The dead leave falls, is a verb
Very weary is an adverb
I would say that the correct answer would be "Definition", as the passage is defining Americans' respect, or lack thereof, for Native culture.
Answer:
The correct answer is 'perusal'. To peruse something is to examine or inspect it, such as when you peruse a book. Shaking means trembling, piteous means pathetic or pitiful, and shatter means broken into numerous smaller pieces.