Which of the following is an example of implied consent?

Implied consent occurs when a person's actions suggest they agree to a procedure or treatment without explicitly stating it. In the context of the example provided, when a patient makes an appointment and arrives for the procedure, their actions demonstrate a willingness to undergo the treatment. This scenario indicates that the patient understands that by showing up, they are allowing the healthcare provider to proceed with the procedure, even if they have not verbally or formally stated their consent.

In contrast, the other options depict scenarios where explicit consent is either given or required. When a patient signs a consent form, they are clearly providing formal consent to proceed with treatment after being informed of the details. A verbal explanation of the procedure by the healthcare provider also involves a more interactive process of obtaining consent, and does not qualify as implied consent since it requires direct acknowledgment from the patient. Lastly, the request by the insurance company to access health records necessitates explicit consent due to legal and privacy regulations, which is contrary to the essence of implied consent. Thus, the scenario of the patient arriving for a procedure exemplifies implied consent effectively.