Final answer:
The section of a portfolio that lists the primary and secondary sources of the tax law is called the bibliography section.
Step-by-step explanation:
The section of a portfolio that has a comprehensive listing of the primary and secondary sources of the tax law is called the bibliography section. A bibliography is a list of the sources used for research, including books, journal articles, websites, and videos. It provides information about each source, such as the author, title, publisher, and publication date.