............rip...........
I would say that the correct answer would be "Definition", as the passage is defining Americans' respect, or lack thereof, for Native culture.
Answer:Professor Jones is using her REFERENT power and Professor Brown is COMMITTED.
Explanation: Referent means someone who can actual stand for you in this case Professor brown is going to stand for Professor Jones in his absentia.
Commited refers to being completed devoted to the task at hand and that we see by Professor Brown going an extra mile in delivering the task he has been given by Professor Jones."Professor Brown not only covers the class, but develops a special lecture and exercise for the students"
Answer: He begin to think of ways to improve the lives in his community
Explanation
The answer is "He begin to think of ways to improve the live sin is community because in the text most the the passage identifies the problem, then he thinks about building a generator and the bigger battery.
Why the other answers are wrong
A is wrong because it tells us the solution not the central idea.
C identifies the problem, not the Central idea of the text.
D is wrong because it tells us his decision, it is better than the other answers but not the best.