Final answer:
A parent or guardian's informed consent is required before any procedure is performed on a minor. Informed consent is the process where a person is given adequate information about a medical procedure or treatment, including the risks and benefits, so that they can make an informed decision.
Step-by-step explanation:
A parent or guardian's informed consent is required before any procedure is performed on a minor. Informed consent is the process where a person is given adequate information about a medical procedure or treatment, including the risks and benefits, so that they can make an informed decision. In the case of minors, their parents or legal guardians provide the consent on their behalf as minors are not considered competent to provide consent for themselves.