Step 1: This is a definition question about what the word pathology denotes.
Step 2: Pathology is understood as the study of how a disease works, covering its causes, mechanisms, and consequences.
Step 3: Practically, it is the branch of medicine that examines tissue and body samples in the laboratory for diagnosis and forensic analysis, again centered on how disease processes operate.
Step 4: Among the choices, the option that best maps to "the way a disease works" is work, so the remaining options are set aside.
\[\boxed{\text{Work}}\]