The factor that attribute to the decision of buying a bag of popcorn is Appetite
Step-by-step explanation:
Appetite refers to the desire to eat food due to hunger and sometimes due to the appealing nature of the food.It is the appetite of a person that regulates the food intake in order to maintain the metabolic rate.
You go to a movie theater after eating dinner and smell popcorn in the concession stand. Although you are full, you start salivating, your stomach grumbles, and you end up buying a bag of popcorn
From the above statement it is clear that the factor that is leading to the purchase decision of the popcorn is the appetite