Which six-year-old child would be most likely to experience an increase in IQ over the next few years

A)  Darius, who continues living with his loving middle-class biological parents 
B)  Aron, who continues living in an understaffed orphanage 
C)  Ceili, who was recently adopted from an understaffed orphanage by loving middle-class parents 
D)  Bettina, who recently started living in an understaffed orphanage following the death of her parents

Increase in IQ

A measurable improvement in intelligence quotient, indicating enhanced cognitive abilities.

Middle-Class Parents

Middle-class parents typically refer to parents from the socio-economic class characterized by moderate income levels, often associated with specific parenting styles and educational aspirations for their children.

Understaffed Orphanage

A childcare facility lacking sufficient staff to adequately care for the number of children housed.