Question

question 1 - 18
all of the following are symptoms of not getting enough sleep except
irritability.
alert and energetic.
trouble concentrating.
falling asleep during class.

Explanation:

Lack of sleep typically causes negative symptoms. Irritability, trouble concentrating, and falling asleep during class are common signs of insufficient sleep. Being alert and energetic is not a symptom of not getting enough sleep; rather, it is more associated with being well - rested.

Answer:

alert and energetic.