Step 1: Concept
This definition refers to the systematic approach used in pharmaceutical manufacturing to prove that processes work as intended.
Step 2: Meaning
It involves collecting and evaluating data, from the process design stage through commercial production, which establishes scientific evidence.
Step 3: Analysis
While Quality Assurance is the broad umbrella of systems, and Calibration refers to equipment accuracy, "Validation" specifically refers to the "documented evidence" of "consistent performance".
Step 4: Conclusion
The provided definition matches the international regulatory definition of Validation.
Final Answer: (A)