I'm not sure if there were specific answer choices but using complex words actually makes your statement rather unclear, especially assuming they are words the average person wouldn't know or understand.
This is a persuasion. Where he says "To attract new businesses to our shores, we need the fastest, most reliable ways to move people, goods, and information—from high-speed rail to high-speed Internet." he is stating the problem. Also where he says "I'm proposing that we redouble those efforts." he is prompting a solution to the problem. Overall he is stating the problem , giving the process and asking for you to help with the solution.
Answer:
b
Explanation
2h đầu đi được 100km
3h sau đi được 90km
=> AB = 190km đi trong 5h
vận tốc trung bình = 190/5=38km/h
I would say A) festering. process of elimination can exclude b and d. So between a and c, a works best.