Final answer:
Long-term mental alertness is related to decreased concentration and focus, while paranoia, extreme happiness, and sensitivity to light are not directly related.
Step-by-step explanation:
The issue related to long-term mental alertness is the decreased ability to concentrate and stay focused for extended periods of time. This can be caused by factors such as sleep deprivation, stress, poor diet, or certain medical conditions.
Paranoia is a psychological issue characterized by excessive distrust and suspicion of others. It is not directly related to long-term mental alertness but can affect one's overall mental well-being.
Extreme happiness is not considered an issue related to long-term mental alertness, but rather a subjective emotional state. It is important to note that extreme fluctuations in mood can be indicative of a mood disorder such as bipolar disorder.
Sensitivity to light, also known as photophobia, can be a symptom of certain medical conditions or eye disorders. While it may affect one's visual perception, it is not directly related to long-term mental alertness.
Learn more about Long-term mental alertness