Final Answer:
A complication of wound healing, fistula is an abnormal passage that connects two body cavities or a cavity and the skin
Therefore, correct option is c) Fistula.
Step-by-step explanation:
A complication of wound healing that involves an abnormal passage connecting two body cavities or a cavity and the skin is termed a fistula (c). Fistulas can result from persistent inflammation, infection, or impaired wound healing, creating an abnormal communication channel. They can occur in various medical conditions, such as inflammatory bowel disease, surgery, or trauma.
Unlike a sinus tract (a) that is a narrow channel leading from a cavity to the surface, a fistula involves a more extensive abnormal connection between structures. Abscesses (b) are localized collections of pus, and seromas (d) are accumulations of clear fluid in a cavity, both distinct from the characteristics of a fistula.
Therefore, correct option is c) Fistula.