Informed consent is directly related to the principle of autonomy, because patients using autonomy are informed of the risks and capable of weighing the consequences of the decision.
willing to make a decision without having all of the information first.
mentally incapable of understanding the risks of the decision.
under the age of 18, with permission from a parent to decide things on their own.

When a patient uses autonomy to give informed consent, such patients are informed of the risks and capable of weighing the consequences of the decision.

Explanation:

All informed consent requires the patient to agree to a study or therapy when the health professional has provided all the necessary information including the potential benefits, effects and risks. In this case, the patient must be aware, assume the risk and agree to perform the study or treatment.

In the case of informed consent, the principle of autonomy applies to every patient in full use of his or her mental functions free from threats or coercion when deciding whether or not to accept a procedure, therapy or treatment.

Other options do not apply:

the second one is wrong

explanation:

answer; indirect elisa;