Answer:
E. Culture
Explanation:
From the question we are informed about an Insight Guides, which is a line of travel books, that provides travelers with background information about people's beliefs,values,and customs in various parts of the world.
In this case , the Insight's books educate travelers about a country's Culture.
Culture can be regarded as a way of life, it is associated to the belief, customs of a particular group in various places.
