Final answer:
The responsibility of obtaining informed consent lies with the registered nurse, who ensures that participants have all the relevant information and voluntarily agree to participate. Informed consent protects the autonomy of participants and prevents exploitation.
Step-by-step explanation:
True
The responsibility of obtaining informed consent for a diagnostic or treatment procedure lies with the registered nurse. Informed consent is a process by which individuals are provided with all the relevant information about the procedure, including potential risks and implications, allowing them to make an informed decision about their participation. The nurse ensures that participants understand the information and voluntarily agree to participate, ensuring their autonomy and protecting them from exploitation.