Which sections were amended by RA 6138?

The correct choice identifies the specific sections amended by Republic Act No. 6138. This law primarily focused on modifications made to Sections 16, 21, and 22, which pertain to the regulations and guidelines surrounding medical technology in the Philippines.

Understanding the context of these amendments is vital for grasping how legislative changes affect the practice and regulation of medical technology in the country. The amendments might relate to enhancing the standards of practice, updating registration processes, or refining the definitions and responsibilities of those in the medical technology field. By correctly identifying these sections, one can appreciate the legal framework that governs medical practices and ensures compliance with current standards.

Looking at the other options, none of the other combinations of sections correspond to the amendments made by RA 6138, which reinforces the importance of being familiar with specific legislative texts and their implications for the MedTech profession.