Final answer:
The ethical principle adhered to in relation to the participants in a falls prevention program in a well elderly setting is informed consent.
Step-by-step explanation:
The ethical principle adhered to in relation to the participants in a falls prevention program in a well elderly setting, as reviewed by the OT, is informed consent. Informed consent is a key principle of the Belmont Report, which emphasizes that participants should have full knowledge and understanding of the study before giving consent to participate. This ensures that participants are aware of the purpose of the study and any potential risks involved.