What is the definition of evolution?

• A. Gradual development or change, especially over long periods of time
• B. An abrupt change
• C. A short-term improvement
• D. A sudden revolution

Answer: (A)

Evolution is the gradual development or change of living organisms over long periods of time, driven by inherited variation and natural selection across generations. This captures the idea that small, accumulating differences in populations lead to lasting changes, rather than quick, one-time, or short-term improvements. The other descriptions describe abrupt, short-term, or revolutionary shifts, which don’t reflect the typical, slow, cumulative nature of evolutionary change.