Sara Blakely founded Spanx, a shapewear manufacturing company, when she was only $27$ years old. She worked tirelessly to develop her concept of comfortable and flattering shapewear and was able to secure a patent for her design using the help of a patent lawyer. She eventually partnered with a mill to produce her designs. Which factor of production did the lawyer fulfill in the creation of the business?

Human resources

Capital

Natural resources

Entrepreneurship