What are the two types of babbling?

The two types of babbling are reduplicated and variegated babbling. Reduplicated babbling involves the repetition of the same syllable or consonant-vowel combination, such as "ba-ba-ba" or "da-da-da." This phase typically occurs when infants are around 6 to 9 months old and is an important step in the development of speech, as it helps infants practice sound production and develop their oral motor skills.

Variegated babbling, on the other hand, occurs when infants begin to combine different consonant-vowel combinations. This can be seen when a child produces sounds in sequences that vary, such as "ba-da-ma." This stage usually appears around 9 to 12 months of age and signifies a progression in their language development, as infants start to experiment with more complex sound patterns.

The other options don't accurately reflect the recognized stages of babbling and language development. Holophrastic and telegraphic languages refer to different stages of early language development beyond babbling. Complex and simple babbling are not commonly used terms in the study of child language acquisition and do not provide specific types of babbling. Vowel and consonant babbling could refer to sounds made but do not capture the structured nature