Final answer:
Manufacturers may face liability for design, manufacturing, and marketing defects, but not 'market' or 'business plan' defects. Marketing defects involve failure to adequately warn consumers about potential dangers. The given counter example situation demonstrates a case where liability arises from knowing, but ignoring, a product defect.
Step-by-step explanation:
When discussing liability for a manufacturer, there are three primary types of product defects to consider: design defects, manufacturing defects, and marketing defects. A design defect is a fundamental flaw in the product's design that makes it inherently unsafe. Manufacturing defects occur when the product departs from its intended design during the production process, leading to an unsafe product. Marketing defects, also known as failure to warn, involve inadequate instructions or warnings that render the product unsafe for use.
Among the options given, market defects and business plan defects are not recognized categories that can lead to liability for a manufacturer; the correct term, as outlined, is 'marketing defects.' In the context provided, all the listed options under marketing defects can potentially lead to product liability, except for the non-existent category of 'all of the above are examples of marketing defects' since it is not a specific defect.
The provided counter example situation illustrates a scenario where a manufacturer would be held liable due to knowledge of a design or manufacturing defect that causes harm. This example underscores the importance of accountability for known defects that pose a risk to consumers.