Answer:
Forgetting to purchase the item is an example of absentmindedness
Step-by-step explanation:
Absent mindedness is where a person shows inattentive or forgetful behavior, It can have three different causes:
a low level of attention,
intense attention to a single object of focus that makes a person oblivious to events around him or her and unwarranted distraction of attention from the object of focus by irrelevant thoughts or environmental events .
Absent mindedness is a mental condition in which the subject experiences low levels of attention and frequent distraction. It is not a diagnosed condition but rather a state people experience in their daily lives from a variety of different causes just as in the case of the woman in the context.