Final answer:
Stress is healthy when it is brief and mild-to-moderate in intensity, and when comfort from a caregiver is present. This positive stress, eustress, can motivate and enhance performance and memory recall.
Step-by-step explanation:
According to the author, stress can be healthy if it is brief and mild-to-moderate in intensity and if the individual receives comfort from a caregiver or supportive figure during the stress. This type of stress, or eustress, is associated with positive feelings, optimal health, and performance. It can motivate individuals to take action and improve their lives, such as studying for exams or performing well at work.
A moderate level of stress can even enhance memory and recall. However, stress becomes unhealthy when it is chronic, severe, or when individuals feel overwhelmed and do not have the resources to cope with it effectively.