Explanation:

- Option 1: Cytology

- Cytology is the science of studying cells, their origin, structure, function, and pathology.

- It focuses on the microscopic examination of cell samples.

- Correct Answer

- Option 2: Histology

- Histology is the study of tissues and how cells combine to form them.

- It explores the complex organization of cells within tissues.

- Option 3: Physiology

- Physiology deals with the functions and processes of living organisms.

- It covers the physical and chemical processes within cells and tissues.

- Option 4: Taxonomy

- Taxonomy is the science of classifying organisms.

- It is not directly related to the study of cells or tissues.