Away to categorize information and point you to where to find that information is called
a. an index
c. a table of contents
b. a glossary
d. both a and c

A way to categorize information and point you to where to find that information is called the table of contents, letter C. It contains the chapters of the topic and its corresponding subtopic. It depends on the length of the topic of that book or section. It is located at the first few pages of the book or other reading material.