Answer: incentive theory
Step-by-step explanation:
What is an incentive theory ?
According to psychologists people are drawn to behaviours that will reward them or that will reward their desires .
From the text above , this person is drawn to the smell of cinnamon buns because it will reward his craving so he approaches the place to buy the cinnamon buns even though he is already full.
This lingering desire of some cravings is drawing the person towards cinnamon bun knowing his cravings will be rewarded with satisfaction after eating .