Which activity sign is associated with a healthy child?

The activity sign associated with a healthy child is being alert and sleeping soundly. A child who is alert demonstrates good cognitive functioning and engagement with their environment, which is essential for overall development. Alertness indicates that the child is well-rested and attentive, which is crucial for learning and social interaction.

Sleeping soundly is equally important, as adequate sleep is vital for a child's physical and mental health. Quality sleep supports growth and development, enhances the immune system, and contributes to emotional stability. A healthy child's ability to achieve restful sleep and maintain alertness during waking hours reflects their optimal health status.

In contrast, the other choices describe signs that may indicate potential health issues. A lack of energy and general inactivity can point to underlying health concerns or developmental issues. Plenty of energy accompanied by hyperactivity may suggest difficulties with self-regulation or even concerns related to behavioral health. Frequent complaints of aches and pains can signal health problems that require attention. Therefore, alertness combined with sound sleep is the hallmark of a healthy child.