Memory impairment is most likely to occur in :
Answer is A (Down's Syndrome) : "Patients with Downs syndrome (Trisomy 21) frequently develop lesions of Alzheimers disease in the third or fouh decade of life." Memory impairment forms an impoant characteristic of Alzheimer's disease and Down's syndrome thus may be considered as a predictor of memory impairment in later life
Downs Syndrome
Alkaptonuria
Attention deficit disorder
Conduct disorder