Final answer:
The likelihood of nonresponse bias is high in the automotive service center's customer feedback survey since it's based on voluntary participation, which may not accurately represent all customer opinions.
Step-by-step explanation:
The automotive service center is collecting customer feedback through a short survey, with an average satisfaction score of 2.47 based on 140 filled out cards. The most likely type of bias in these survey results would be nonresponse bias. Nonresponse bias occurs because many customers may choose not to fill out the cards, hence the collected data may not represent the views of all customers. Those who had a particularly negative or positive experience may be more inclined to complete the survey, while those with moderate views may not bother, skewing the results.