Which of the following is NOT a requirement for Quality Control?

In the context of Quality Control, the focus is on ensuring that products meet specific requirements and standards through systematic processes. Sampling, inspection, and corrective action are all integral parts of Quality Control.

Sampling involves selecting portions of materials for testing to make inferences about the whole batch, ensuring that it meets quality standards. Inspection is the process of examining materials and products to assess their quality against established criteria. Corrective action is necessary for addressing any issues found during inspection, to prevent recurrence and maintain consistent quality.

Marketing, however, does not directly contribute to the Quality Control process. It relates more to the promotion and sale of a product rather than the internal processes that ensure the product’s quality. Therefore, it is not a requirement for Quality Control, making it the correct response to the question.