A 3-month-old child has a typical mewing cry and a congenital hea disease. The most probable chromosomal abnormality is:

--> Cat cry with congenital hea disease in an infant suggests Cri du chat syndrome CRI DU CHAT SYNDROME: Caused d/t Chromosome 5p deletion. Hence called as 5p minus syndrome Aka Cat Cry Syndrome --> as these infants presents with high-pitched cry that sounds like that of a cat. Associated with VSD, PDA, ASD