Answer:
Focus
Explanation:
to specialize in a subject is to focus and study it.
Catching a bus can be the cheapest way of traveling between cities. It
is often the only way of getting to smaller towns if you are not
driving a car. Remember that bus travel can be very long due to the
great distances involved. Most buses have air conditioning and a
washroom on board. The largest network of bus routes is run by a
company called Greyhound and its affiliates.
I believe the correct answer is pleasant and attentive.
The author is stating in the excerpt that he though he would be getting his freedom back because of his 'gentleness and good behavior.' He wanted everyone around him to feel happy but also to do good things in order to be free again.