In safety-critical software development, why is verification important?

• A. It ensures software meets its specification
• B. It ensures the color of the interface
• C. It reduces manufacturing cost
• D. It guarantees zero faults

Answer: (A)

Verification in safety-critical software development is about proving that the software is built to meet its defined requirements and design. By checking that the implementation aligns with the specified functions, performance, safety properties, and timing constraints, you build objective evidence that the product behaves as intended under expected conditions. This evidence comes from activities like reviews, static analysis, and systematic testing that trace requirements to implementation, supporting safety certification and regulatory compliance. The goal is to show the product has been built right, not just that it happens to work in some cases.

The other ideas miss the central point: the concern here is conformance to the specified requirements and safety expectations, not the interface color or a cost impact from verification, and certainly not an unrealizable guarantee of zero faults. Verification reduces risk and defects by demonstrating alignment with the specification, though it cannot promise absolute faultlessness.