Final answer:
Chronic stress can lead to heart disease in the long term, while conditions like a stiff neck, stomachache, and a cold are more immediate stress responses.
Step-by-step explanation:
One possible stress response that Elfrieda would only experience in the long term is heart disease. Chronic stress can have a negative impact on the cardiovascular system, increasing the risk of developing heart diseases such as hypertension, heart attack, and stroke.
While conditions like a stiff neck, a stomachache, and a cold can be immediate stress responses, heart disease takes time to develop and is typically associated with long-term exposure to chronic stress.
Learn more about the long-term stress response of heart disease