Correct Answer: Encyclopedia

Solution : The third option is the correct answer.

An encyclopaedia is a comprehensive reference work that provides information on various subjects or aspects of one subject, usually arranged alphabetically.

The meanings of other options are as follows:

• A glossary is a list of terms and their definitions, often found in the back of a book.
• A dictionary is a book containing words, their meanings, and often their pronunciation.
• Thesaurus is a reference work that lists words grouped together according to similarity of meaning.

Therefore, the correct answer is encyclopaedia.