Which statement BEST exemplifies the critical thinking error of confirmation bias?

Someone is looking to buy a new phone and is persuaded by an advertisement saying it is the best$-$selling phone.

While shopping for a new appliance, a person starts with a favorite model and seeks out positive reviews of that appliance on the Internet.

A person believes that using a map is the best way to navigate, not an app, because maps have been used for many years.

A person believes their significant other is faithful even though the person has cheated before and there is evidence he or she has cheated again.