Three-month-old Mikey is beginning to communicate through __________, whereas his six-month-old cousin, Charlie, is __________.
▸ cooing; babbling
▸ babbling; cooing
▸ vocalizing; cooing
▸ babbling; vocalizing
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Three-month-old Mikey is beginning to communicate through __________, whereas his six-month-old cousin, Charlie, is __________.
▸ cooing; babbling ▸ babbling; cooing ▸ vocalizing; cooing ▸ babbling; vocalizing
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