Concept:Baby talk refers to the early vocalizations infants produce. Babbling is the stage where babies repeat syllables like "ma" and "da."Explanation:Language development in infants follows a fixed sequence. Around six to ten months, infants begin babbling. They repeat consonant‑vowel combinations such as "mamama" or "dadada." This stage is directly associated with baby talk, unlike crying, cooing, laughing, or gargling. Babbling is a key milestone in language acquisition.Answer:Option B (Babbling)