Final answer:
Quality as a precise and measurable variable is a product-based definition of quality, focusing on specific characteristics allowing a product to function as expected.
Step-by-step explanation:
Viewing quality as a precise and measurable variable is C. A product-based definition of quality:
Explanation: Quality can be viewed from different perspectives, leading to various definitions. A product-based definition of quality considers that quality is a precise and measurable attribute; this includes specific characteristics that a product has that allow it to function as expected. A user-based definition would focus more on how well a product satisfies the preferences and needs of the user.
The American Society for Quality might focus on a broader definition that encompasses user satisfaction, product specifications, and adherence to standards, among others. Manufacturing-based definitions emphasize conformance to standards and specification during the production process. Meanwhile, an unrealistic definition implies quality is something unachievable or not capable of being precisely defined or measured.