Answer:A weak immune system
Explanation:
When people get older their immune system becomes weak including the function of the T cells which are cells responsible for fighting infections.
This means it becomes hard to recover from a flue when someone get sick and they are always prone to sickness since their immune system no longer has the power to fight infections.
Humans shouldn’t fidget with the course of nature, because it leads to more and more problems.
Of the following, an example of eustress is getting excited about being promoted. (Option A)
Stress is defined as a normal physiological and psychological response to their circumstances. Eustress is a term used to describe stress that is motivating, positive, and enhances functioning. It is a beneficial stress which could be physical, psychological, or biochemical/radiological. The term was framed by endocrinologist Hans Selye, and literally meaning "good stress". It is the opposite of distress which refers to bad and overwhelming stress that impairs functioning. Hence, of the given options, getting excited due to a promotion is an example of eustress as it is a good or beneficial stress.
Learn more about Eustress:
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