Language and intelligence intertwine beginning at what age? from birth toddlerhood age 3 age 4

Baby talk at 9 months. After 9 months, babies can understand a few basic words like "no" and "bye-bye." They also may begin to use a wider range of consonant sounds and tones of voice. Baby talk at 12-18 months.

steady state because it the only on that maes sense

answerblank(1)///voluntaryblank(2)// internal;