Final answer:
Library materials are organized using the Dewey Decimal System, which provides detailed categories and subcategories for a vast range of subjects. The system, created by Melvil Dewey, aids in the precise classification of library resources.
Step-by-step explanation:
Materials in a library are usually organized using a method known as the Dewey Decimal System. This system was developed by Melvil Dewey in 1876 and it divides the world of knowledge into ten broad categories. Each category is further subdivided into ten divisions, and each division into ten sections, giving a total of 1,000 categories. Detailed subjects can have decimal points and further divisions to make classification more precise. It is not arranged by alphabetical order, chronological order, or subject-classification, so the correct answer to your question is a) Dewey Decimal System.
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