Which activity is typically associated with the non-verbal stage of language development?

The non-verbal stage of language development is characterized by a child's exploration of sounds and vocalizations, which is primarily seen through babbling and experimenting with sounds. At this stage, infants are not yet using recognizable words or sentences; instead, they are playing with the sounds of their own voice, practicing the control of speech muscles, and beginning to understand the rhythm and patterns of speech. This developmental phase is crucial as it lays the foundation for future language skills.

In contrast, the other activities listed are further along in the development process. Reading simple books involves comprehension and recognition of words, which occurs at a later stage. Producing full sentences reflects a much more advanced stage of language skills, while using single words consistently indicates that the child has progressed beyond the non-verbal stage to a point where they can communicate specific meanings. Thus, babbling and experimenting with sounds accurately represent the non-verbal stage and are essential steps toward advancing in language development.