What is one of the three types of defects that can render a product defective?

One of the three types of defects that can render a product defective is inadequate instructions or warnings. This type of defect falls under the category of "failure to warn" or "inadequate warning," which is essential in product liability cases. Manufacturers and sellers are obligated to provide adequate instructions for safe use and appropriate warnings about potential risks associated with their products. If a product lacks necessary warnings or instructions that would have informed the user about risks or safe handling procedures, it may be considered defective because it poses an unreasonable risk of harm.

Inadequate instructions or warnings can lead to misuse of a product, resulting in injury to the user or others. This is especially critical in cases where the product could be hazardous. The law recognizes that consumers expect to receive clear and complete information about the products they purchase, and failure to meet this expectation can expose the manufacturer or seller to liability for any resulting harm.

The other options listed—excessive packaging, complicated usage manuals, and marketing shortcomings—do not directly pertain to the fundamental responsibility of ensuring safe product usage. While they may be related to consumer experience or marketing effectiveness, they do not bear the same legal implications in terms of product safety and liability. Therefore, inadequate instructions or warning is the correct