What can marketers do at each stage to influence the customer in their favour

$$What is post$-$purchase dissonance and what can companies do to reduce it$?$

$$How do low$-$involvement decisions differ from high$-$involvement decisions in terms of relevance, price, frequency, and the risks their buyers face? Name some products in each category that you've recently purchased.

$$What stages do people go through in the buying process for high$-$involvement decisions