Answer:
remind consumers of existing needs.
Explanation:
The purchase decision-making process is the process by which customers realize that they have an unsatisfied need and they need to purchase a product or service to satisfy it. The first stage of that process is the problem recognition stage, where the customer realizes that he/she has a problem or unsatisfied need.
One way marketing creates needs is by reminding customers that they might have an unsatisfied need. Marketing doesn't create a need, since they are biologically motivated, it just reminds customers about them. E.g. you are thirsty, biological need, and marketing reminds you that Coke will satisfy it.