Answer:
Babbling
Step-by-step explanation:
Babbling is a form of speech that an infant before the age of 12 months emit, since they do not yet have the ability to make full words. The development starts from being able to make one vowel-based vocalization to eventually being able to say one word, repeated over and over again. Babbling across cultures and languages, although there might be differences in the type of sounds made when babbling, depending on the dominant language used by its caretakers.