Find the alternative that can be a member of the given group/class.
Pathology, Radiology, Cardiology

Pathology, Radiology, and Cardiology are all specialized branches of medical science. Similarly, Hematology (erroneously spelled as Hermatology in the original exam paper print) is the study and medical branch concerned with blood and blood-related disorders, fitting perfectly into this group. Biology, Geology, and Zoology are broader natural sciences.