Pediatrics Social and Language Milestones 812b3c91 A child can laugh aloud at the age of:- A 2 months B 4 months C 6 months D 9 months High-Yield Explanation A child laughs aloud at the age of 4 month. 1 month - ales to sound 2 months - Vocalizes 3 months - Coos 4 months - Laughs aloud