Which of the following is an example of receptive language?

Receptive language refers to the ability to understand and process information that is communicated verbally or non-verbally. In this context, when an infant responds to repeated sounds and pictures in a storybook, it demonstrates their understanding of the stimuli presented to them. This indicates that they are able to comprehend the meanings associated with the sounds and visuals, which is a fundamental aspect of developing language skills.

This ability is critical in early language development because it lays the groundwork for future communication. The engagement with storybooks not only involves recognition of sounds and images but also reflects an understanding of the narrative or concepts being presented, which cues the child’s cognitive development and ability to interpret messages.

Other choices illustrate different aspects of communication or emotional expression rather than language comprehension. For instance, babbling is a form of expressive language, reflecting the infant's attempts to communicate rather than understanding. Crying when hungry indicates a basic need being expressed but does not involve language comprehension. Pointing at objects is an active communicative behavior indicating desire or interest, rather than understanding language itself.