Researchers in the Willowbrook study obtained

A) fully voluntary consent from the parents of their subjects.
B) fully informed consent from the parents of their subjects.
C) consent from the parents of their subjects, but that consent was neither informed nor voluntary.
D) no consent of any sort from the parents of their subjects.
E) consent from their subjects directly.

Fully Informed Consent

Fully informed consent is a process by which individuals are given comprehensive information regarding a medical treatment, procedure, or research participation, ensuring they understand and voluntarily agree to it.

Voluntary Consent

The agreement to participate in an activity, such as a medical treatment or experiment, given freely and with full understanding of the implications, risks, and benefits involved.

Willowbrook Study

A controversial human research study conducted in the 1950s and 1960s which involved intentionally infecting mentally disabled children at the Willowbrook State School in New York with hepatitis in order to study the disease's development.