In this course, glossary terms are bold green type. Glossaries are used to provide readers with a quick reference. Therefore, option (D) is correct.
Glossary terms are words or phrases that are defined and explained within a glossary. A glossary is a collection of terms and definitions that are typically found at the end of a book, document, or website.
They are used to give readers a quick reference for unfamiliar or specialized terms that are used within a particular context or field of study.
By including a glossary, authors and publishers can make their writing more accessible to a wider audience by providing definitions for technical terms that may be unfamiliar to some readers.