Which term describes restoring or replacing something that has become inoperable?

• A. Repair
• B. Replace
• C. Rebuild
• D. Restore

Answer: (A)

When equipment has stopped working, the action described is repair—fixing the fault so the device can operate again. Repair targets the problem itself, such as a worn seal, a broken part, or a misaligned component, with the goal of restoring normal function without replacing the entire item.

Replacing would mean substituting the whole unit with a new one rather than fixing the existing one. Rebuilding implies a more extensive reconstruction, often restoring major components or the entire system to a like-new state. Restoring can mean returning something to its original condition, which can involve cosmetic or broader historical restoration beyond simply getting it to run again. In the context of making something operable after a failure, repair is the precise, appropriate term.