Answer:
Implied warranty.
Explanation:
Implied warranty is when there are presumed assurance of the performance of a product due to the circumstances of the sale. For example when one purchases a television the assumption is that the television will work. This is the implied warranty when making a purchase.
In this instance Sylvania sells light bulbs and the buyer assumes that the bulbs are safe to use, and will last for a good period of time before they fail.
A violation of implied warranty for example is if one buysa product and it does not work at all. The customer can return the item for replacement.