Final answer:
The sign of an altered mental status in a small child is irritability or restlessness. This could indicate that the child is experiencing changes in their mental state and may need medical attention.
Step-by-step explanation:
The sign of an altered mental status in a small child is d) Irritability or restlessness. Irritability or restlessness can indicate that a child is experiencing changes in their mental state and may be unable to cope with their surroundings. This could be due to factors such as illness, injury, or changes in their environment.
For example, if a child is normally calm and content but suddenly becomes fussy and agitated, it could be a sign that something is wrong. It is important to pay attention to these signs and seek medical attention if necessary to ensure the child's well-being.