What type of speech is characterized by high pitch and exaggerated speech patterns, often used with infants?

The correct answer is characterized by a specific mode of communication that caregivers often employ when interacting with babies. This form of speech is known for its high pitch, rhythmic qualities, and exaggerated intonation, which captures the infant's attention more effectively than normal speech patterns.

Using this type of speech, caregivers can convey emotions and engage infants, promoting bonding and facilitating language development. The playful and melodic nature of this speech helps to maintain the infant's interest and encourages back-and-forth interactions, which can be vital for their cognitive and social development.

While options that might describe other forms of communication, such as adult-directed or standardized speech, do not encompass those distinctive features tailored for infants. Instead, these forms are typically more formal and lack the exaggerated elements intended to foster early communication skills in children. Thus, “infant-directed speech” is the most accurate choice reflecting the characteristics described in the question.