Diagnoses disease through lab and tissue analysis.

• A. Pathologist
• B. Pediatrician
• C. Psychologist
• D. Ophthalmologist

Answer: (A)

Diagnosing disease through lab and tissue analysis is the work of a pathologist. They examine tissue samples from biopsies and body fluids, using microscopes, special stains, and laboratory tests to identify disease processes and confirm a diagnosis, which guides treatment decisions. The other professions focus on different areas: a pediatrician relies on patient history, physical exams, and age-appropriate tests rather than microscopic tissue analysis; a psychologist uses interviews and psychological assessments to evaluate mental health; an ophthalmologist specializes in eye health and vision, not tissue-based diagnoses. This makes the pathologist the best fit for the description.