Your friend is watching an exciting sports match of her favorite team. She is eating snack foods nervously, because of the action, the suspense and her apprehension. Her drive to eat is most likely based on

Emotional comfort

Explanation:

In the situations of anxiety where the outcome of an event or situation is beyond our control such as in the question of watching a sports match that can either favor her team or the other team, making use of food to take care of the emotional need to feel good by the outcome (which ever way) of the game in the question rather than as a result of the need to eat is known as emotional eating.

The type of food chosen for comfort are reflective of the use consisting of junk food, snacks, sweets and other mode uplifting but unhealthy foods.

it's a nutrition food for pregnant mothers so they unborn child can get its nutrition that it needs to grow in to a healthy baby.

explanation:

and the mother is getting all of her nutrition and her calcium and vitamins .