Final answer:
A Pathologist is the medical professional who conducts tests on body fluids, tissues, and cells for disease detection and diagnosis. The correct option is B.
Step-by-step explanation:
The professional who performs a wide array of tests on body fluids, tissues, and cells to assist in the detection, diagnosis, and treatment of diseases and illnesses is a Pathologist. Pathologists have completed medical school and an extensive post-graduate residency, allowing them to specialise in the laboratory detection of disease.
They may oversee clinical laboratories, evaluate body tissue and blood samples, and examine tissue specimens through a microscope for signs such as cancer or infection. Furthermore, pathologists can perform autopsies to determine a cause of death and understand the progression of disease.