Dewey decimal and library of congress refer to
web search engines,
library classification systems,
methods of documentation.

The correct answer is B. Library Classiffication Systems.

Explanation

The Dewey Classification system is a classification system that was created in 1876 by Melvin Dewey. This is used in libraries based on the classification of books in a hierarchical manner. In the first level, also called summary, we can find ten main classifications of books, each with specific topics that deal with topics more generally; in the second level there are ten classifications for each classification found in the summary and the topics begin to deal more specifically with the topics of its summary. This pattern continues producing during more sublevels that allow establishing a great variety of classifications.

On the other hand, the classification system of the congress library is a classification system developed in 1897 by Charles Ammi Cutter. This system uses the alphabet creating a classification for each of its letters, also has the peculiarity that it is used exclusively in the academic and research libraries of the United States.

So, the correct answer is B. Library classification systems.

aa

explanation:

literally the answer is aa. not kidding. aa is a group.

panem is a communist totalitarian dictatorship where all the resources and how they are allocated belongs to the capitol. the districts exist only to provide goods and services for the capital and most of the citizens live in poverty. it is a police state where the "peacekeepers" use force and threats to keep the people under control. dissent is outlawed and those who disobey the law are executed, flogged, or turned into avoxes. the games are another means in which the ruling elite in the capitol exert their power over the districts. when reading the books i drew parallels between panem and the soviet union and north korea. in no way is panem capitalist. the people in the capitol are wealthy but the majority of them are involved in the government somehow. it was the same way in the former soviet union where bigwigs in the communist party and high ranking government officials were given access to goods, services, medical treatments not available to the general public. if you think panem has a capitalist economy you need to brush up on your economics.