What is an alphabetical list of the most pertinent works in a text, with notations of where they might be found?

The correct answer is concordance because it specifically refers to a comprehensive alphabetical list of significant terms or works found within a text, often accompanied by references to the passages in which they occur. This resource is particularly useful for researchers or readers seeking to locate specific information or themes within a larger work.

In contrast, an index serves a different purpose; it organizes topics or subjects in a text alphabetically but does not typically focus on individual works cited within the text. An appendix contains additional material that supports or expands on the main content of the work, but it does not offer a list of pertinent works. A bibliography, while it does list significant works related to the subject, is generally a compilation of sources consulted or cited in the creation of the work rather than a guide to where terms are found within the text itself.