Cooing and babbling refer to first speech sounds of the infant. Here, babbling is

Correct option is A

Babbling is an experimental phase in infant language development where the child starts to utter articulate sounds but doesn't produce any recognizable words. This stage is characterized by infants making sounds and noises as they learn to control the articulators involved in speech production, like the lips, tongue, and palate. This exploration is crucial for the development of language as it helps infants understand the sounds they can make and lays the foundation for later speech. Babbling involves playing with sounds, not forming coherent words, and is an important step towards meaningful speech.