Who serves as the Executive Officer of the Board according to RA 5527?

The correct choice is the PRC Chairperson, who serves as the Executive Officer of the Board according to RA 5527, also known as the Philippine Medical Technology Act of 1969. This law establishes the organization and regulation of the practice of medical technology in the Philippines. In this capacity, the PRC Chairperson has significant responsibilities, including the overall management of the board's activities and decisions relating to the regulation of the profession.

This role is essential as it ensures that the licensing and regulation processes for medical technologists are conducted in line with the established standards of the profession. The PRC, or Professional Regulation Commission, plays a critical role in overseeing various professions besides medical technology, which is why the Chairperson is entrusted with these important executive duties.