Final answer:
Option D, 'Make your results accessible,' is NOT one of the 4 basic principles underlying the professional code of ethics set forth by the American Anthropological Association.
Step-by-step explanation:
The American Anthropological Association (AAA) has outlined four basic principles underlying their professional code of ethics. These principles include maintaining strict objectivity in the context of field work, obtaining informed consent and necessary permissions, weighing the potential harm and benefits of one's work, and making the results accessible. Therefore, option D, 'Make your results accessible,' is NOT one of the 4 basic principles underlying the professional code of ethics set forth by the AAA.