Answer & Solution
Answer: Option
C
Solution:
The correct option is "System testing".
Mistakes made in the requirements analysis stage are among the most critical, because if the requirements are wrong or incomplete, the system is built on a faulty foundation.
These errors usually remain hidden during system design and system development, because the system is still being constructed according to the incorrect requirements.
It is during system testing that these mistakes are discovered, since testing involves checking whether the developed system meets the original requirements. At this stage, mismatches between what was needed and what was built become visible.
Why not the others?
"System design" still follows the faulty requirements, so errors do not surface here.
"System development" implements the design, so mistakes remain hidden until validation.
"System implementation" is the stage of deployment and usage; errors from requirements would already have been revealed in testing before this point.
"None of the above" is incorrect because the right answer is clearly system testing.
Therefore, the correct answer is "System testing".
