The National Association for the Education of Young Children defines mobile infants as which type of children?

The National Association for the Education of Young Children defines mobile infants primarily as children who are engaged in exploration. This developmental stage typically includes infants who are beginning to crawl or move around independently, allowing them to explore their environment actively. This exploration is crucial for their cognitive and physical development, as it encourages curiosity and the development of motor skills.

Infants at this stage may not yet be fully walking, which distinguishes them from those who are categorized as fully mobile walkers. Additionally, while non-verbal communication can be a characteristic of infants, it does not define their mobility status. Observers only are typically not in the mobile infant category since this suggests a level of inactivity rather than engagement in exploration. Therefore, engaging in exploration is the key defining characteristic of mobile infants as recognized by the National Association for the Education of Young Children.