Answer:
D) an ineffective marketing plan.
Step-by-step explanation:
Product liability is defined as the liability that manufacturer bears when he puts defective product in the hands of the consumer.
Manufacturers are liable for damages that occur from the use of their products. They are also responsible for providing adequate instructions on use of the product and warning of adverse effects a user can experience.
SmartTalk, Inc produces cell phones and related accessories. They have product liability when there is a manufacturing defect, design defect, and inadequate warning on use of the product.
However the company does not have product liability for ineffective marketing as this is related to how well the company sells the product and not if the product is defective.