Final answer:
Vandelay Industries is a fictional company from the show Seinfeld, said to manufacture Latex, as part of character George Costanza's lies.
Step-by-step explanation:
The fictional company Vandelay Industries comes from the television show Seinfeld. It is frequently referenced throughout the series, mainly by the character George Costanza. The answer to the question, "What does Vandelay Industries manufacture?" is D. Latex. George invents the company and its involvement in the latex business as part of an ongoing lie about his employment status.