Answer:
Adverse selection
Explanation:
Adverse selection typically refers to such a circumstance when sellers possess knowledge that customers just don't have, about some type of quality of products — in other terms, it is a method of leveraging asymmetric data.
In other words, Asymmetric information, often referred to as intelligence loss, occurs when any group has better knowledge of data than any of the other group.
Thus, we can conclude that the warranty is given to ensure customers that nothing has been hidden from them.