The resource that is usually provided at the end of a text to show you the meaning of words is called a glossary. To find out which answer is correct, you can use your knowledge and understanding of different types of reference materials. In this case, a dictionary is a comprehensive reference book that provides definitions, pronunciations, and spellings of words. It is typically used to look up the meaning of words. A thesaurus, on the other hand, is a reference book that provides synonyms and antonyms for words, helping to expand vocabulary and find alternative words. However, a glossary specifically focuses on defining key terms or concepts within a particular text or subject area. This makes option C, glossary, the most suitable answer for the given question.
