Final answer:
At 42, Franklin became a patron by sponsoring his journeyman as a partner, supplying capital and expertise for labor.
Step-by-step explanation:
Benjamin Franklin, at 42 years old, sponsored his journeyman as his partner in 1748. Franklin supplies the capital and expertise in return for labor over a seven-year term--in effect becoming a patron.
In this unique arrangement, Hall received Franklin's financial backing and guidance, while committing to a seven-year term of labor. Essentially functioning as a patron, Franklin aimed to empower and invest in Hall's skills and potential. This collaborative model not only demonstrated Franklin's entrepreneurial foresight but also contributed to the establishment of Hall as a successful printer and publisher, showcasing Franklin's belief in the mutual benefits of mentorship and partnership in the flourishing intellectual and economic landscape of 18th-century America.