Final answer:
Advertisement claims should hold the least influence on a consumer’s buying decision, as they are less likely to provide factual information compared to product quality, customer service, and convenience of purchase.
Step-by-step explanation:
When making a buying decision, the factor that should hold the least influence on a consumer is d. advertisement claims.
This is because advertisements often utilize peripheral route persuasion, which includes cues such as celebrity endorsement, positive emotions, and attractive models rather than focusing on factual information about the product's quality, the customer service provided, or the convenience of purchase.
These physical aspects, like an unbreakable bottle or a nonstick surface, and service factors are more substantial determinants of a product's value and user satisfaction.