During your trip to another country, it is important to try to be aware of the cultural differences in communication styles to avoid
a. seeming rude
b. causing irritation
c. misunderstandings
d. all of the above

The answer is d. all of the above.  Though you are a tourist, you also have to know and respect the culture and tradition of the place where you are vacationing.  Being aware of that helps you better understand the people as well as gain their friendship and respect.

answer; randomized controlled trials;

answer; the people,; the elected officials;