What is a device that replaces a missing body part to improve function or appearance?

• A. Prosthesis
• B. Implant
• C. Transplant
• D. Artificial limb

Answer: (A)

A prosthesis is the broad term for an artificial device that replaces a missing body part to restore function or appearance. It can include limbs, teeth, eyes, and more, and is designed to fit the person and help with daily activities or how they look. An implant, by contrast, is a device placed inside the body to replace an internal structure or support tissues, not typically something worn or removable. A transplant involves moving tissue or an organ from one person to another, which is biological rather than a manufactured device. An artificial limb is a specific example of a prosthesis, but the general term used here is prosthesis because it covers all such replacements beyond just limbs.