Which of the following best describes Six Sigma?

• A. A method to guarantee zero defects in all processes.
• B. A marketing strategy for long-term customer satisfaction.
• C. An acronym for speed, quality, and cost.
• D. Process designed to focus on developing and delivering near-perfect products and services. Reduce number of faults in a product below an accepted tolerance limit.

Answer: (D)

Six Sigma is a disciplined, data‑driven improvement approach that aims to reduce defects and process variation so outputs meet customer requirements with near‑perfection. It does not promise absolute zero defects, but strives to minimize faults to a level that is effectively near perfect, often described as producing products and services within defined tolerances. The description that fits best captures this focus on delivering near‑perfect results and reducing defects below acceptable limits, while the other options misstate its scope or purpose.