Question

in the babbling stage, what do infants do? speak distinctive language sounds from various cultures imitate primitive adult language sounds heard from adults reflect the work of the parents to teach them sounds make spontaneous consonant - vowel pairs by bunching tongue

Explanation:

In the babbling stage, infants typically produce spontaneous consonant - vowel combinations (like "ba - ba", "da - da") by manipulating their tongue and other articulatory organs. The first option is incorrect as infants in the babbling stage don't produce sounds from various cultures' distinct languages. The second option is wrong because babbling is not imitation of adult language sounds (imitation comes later), and the third option is incorrect as parents don't actively "teach" sounds in the babbling stage; babbling is spontaneous.

Answer:

make spontaneous consonant - vowel pairs by bunching tongue