Final answer:
The IT professional organization aimed at providing leadership and education in IT, and enhancing marketability of its members, is the Association of Information Technology Professionals (AITP).
Step-by-step explanation:
An IT professional organization whose mission is to provide superior leadership and education in information technology and that has a goal to help its members make themselves more marketable within their industry is c. AITP (Association of Information Technology Professionals). The AITP is committed to the advancement of its members by providing networking opportunities, resources for career growth, and continuous education. It aims to help IT professionals in developing marketable skills and advancing their careers within the information technology industry.