Final answer:
Legal immunity under the Health Care Quality Improvement Act is provided for peer and review activities if fair hearing opportunities are offered.
Step-by-step explanation:
Under the Health Care Quality Improvement Act, Congress established broad legal immunity for physicians and others engaged in (a) peer AND (b) review activities provided that required notice and (c) fair OR (d) hearing opportunities were provided.
The correct answer to fill in the blanks is peer, review, and fair hearing.
These terms ensure that medical professionals have legal protections when participating in actions aimed at maintaining the standard of healthcare while also ensuring due process is granted to those under review.