Answer:
The answer is four: 4. Confirmation bias
Step-by-step explanation:
Confirmation bias is defined as a tendency to search for and interpret, favor, and rememeberl information so that one's previous beliefs are confirmed. Confirmation bias is a type of cognitive bias and people who demostrate it show bias when they gather, recall or interpret information in biased way. Here one refuses to admit that another car is better since that would clash with their conviction that their choice is the best one.