Correct Answer: Encyclopedia

Solution : The correct one-word substitute is the first option.

An encyclopaedia is a comprehensive reference work that contains information on a wide range of topics or knowledge areas. It consists of articles, often arranged alphabetically, covering various subjects.

The meanings of the other options are as follows:

• A dictionary is a reference book that provides definitions, meanings, pronunciations, and often usage examples of words in a particular language.

• A volume is a book or part of a book that is part of a larger work, such as a series or collection.

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• An anthology is a collection of selected writings or literary works, often by different authors, on a specific theme, genre, or subject.