A. benefits should be correct
Hello.
The correct answer is "A.) Thesaurus". This is because Thesauruses contain most or all synonyms and antonyms, while dictionaries contain primarily just definitions and pronunciation. Encyclopedias are Internet-based sources that contain videos, images, and other information, but do not contain synonyms.
A glossary is essentially a very brief dictionary; it contains terms and definitions, reference pages, and all the sorts. But they do not contain synonyms.
I hope this helps!
When something happens that is completely opposite the audience expects.