This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Spectrum of IDD does NOT include- 
Select and explain. 
A. Still bihs, B. Hyperactivity, C. Deafness, D. Delayed development
B: Hyperactivity
Answer: B: Hyperactivity 
Explanation: Ans. is `b' i.e., Hyperactivity Spectrum of I DI) in order of increasing severity, Goitre Hypothyroidism o Subnormal intelligence o Delayed motor milestones o Mental retardation o Hearing defects o Intrauterine death (still bih, aboion) Speech defects Strabismus (squint) Nystagmus Spasticity (extrapyramidal) Neuromuscular weakness o Endemic cretinism