Answer:
The correct answer is pathology.
Step-by-step explanation:
The branch of science that deals with the study of the essential nature of the diseases is known as pathology. A medical doctor that exhibits specialization in pathology is known as a pathologist.
A pathologist refers to a physician who examines the body tissues and fluids and assists the primary care doctor in making the diagnosis of the medical issue one possesses, and utilizes the tests done in the laboratory to look after the health of the patients with extreme conditions.