In Dewey Decimal Classification, which number represents generalities?

In the Dewey Decimal Classification system, the number that represents generalities is 000. This section serves as the classification for works that do not fit neatly into other specific categories. It encompasses a variety of subjects, including encyclopedias and general reference works, which can provide a broad overview of many topics. This classification is essential for the organization of information that deals with general knowledge and foundational concepts across various domains.

The other options represent different categories within the Dewey Decimal system. The number 100 is designated for philosophy and psychology, while 200 is for religion, and 300 pertains to social sciences. Each of these categories is more specialized, focusing on specific subjects rather than the generalities that the 000 category encompasses.