An infant presenting with inactivity and mild, agitated vocalizations is in which awake state?

The infant's presentation of inactivity combined with mild, agitated vocalizations indicates that they are in the active alert state. In this state, infants show signs of both being awake and experiencing a certain level of activity or heightened sensory awareness. They may exhibit restlessness, movement, and varying levels of vocalization as they interact with their environment.

In contrast, the quiet alert state is characterized by the infant being awake and calm, engaging with their surroundings without excessive movement or vocalizations. The asleep state is when the infant is unresponsive and not awake, showing no movement or vocalizations, while deep sleep is marked by a lack of responsiveness to external stimuli and minimal movement.

Therefore, the use of "mild agitated vocalizations" and some activity points toward the active alert state, making it the most accurate choice.