Step 1: Understand the relation
- A pilot operates from a cockpit, which is the specific place where the pilot controls the airplane.
Step 2: Parallel relation
- A surgeon operates in an operating room, which is the specific place for performing surgeries.
Step 3: Why other options are incorrect?
- Waiting room and hospital are general areas, not the specific place of operation.
- Scrub room is where surgeons prepare, not where they operate.
Therefore, Option (A) Operating room is correct.