A student is looking for information about the periodic table in a chemistry textbook. Which of the following textbook features should the student use to find the pages where this topic is discussed?
A. References
B. Glossary
C. Index
D. Appendix
The index typically lists topics alphabetically along with page numbers where they are discussed in the textbook. By looking up "periodic table" in the index, the student can quickly locate the relevant pages.
Therefore, the Correct Answer is C.