The Essence of the Concept of Informed Consent Is

The essence of the concept of informed consent is

A) having research participants sign a form acknowledging that they understand the potential risks and benefits of participating and that they consent to participate.
B) receiving IRB approval of the information you will provide to participants before you collect data from them and obtain participants' consent to participate based on that approval.
C) participants' having a clear understanding of the potential risks and benefits of participating and basing their consent to participate on that understanding.
D) assuring participants that the research presents no more than minimal risk and obtaining their consent to participate based on that assurance.