Thinking Skills Assessment: Entrance Exam Sample Questions
If people go to a foreign country, they should try to learn at least some of the language of that country because, while it is difficult to pick up a foreign language in a short time, learning just a little of a foreign language helps you to find out more about the country itself and its people's customs. As well as this, it means that you can do things much more easily by being able to ask for directions or just by being able to order what you want at a restaurant, which is much less embarrassing than pointing and arm-waving.
                     
Which one of the following is an expression of the main conclusion of the above argument?
Correct!
D
When people visit a foreign country they should try to learn some of the language.
Explanation
Not all arguments give their conclusion at the end.  In this case, the first sentence is the main conclusion.  The rest of the text is providing the reasons for the conclusion.  In this case there is an obvious indicating word - because - after which comes the reasons.

A is most likely true but it is still only a premise.
B is most likely true but it is still only a premise.
C may be true; but, is not the conclusion; it may function as an objection, albeit a weak one for one could simply plan ahead and study for a longer time.
E is a not part of the argument at all; the argument says signs are embarrasing, not difficult; so, E is not relevant to the argument.