Choose or find odd pair of words - (Proteins : Marasmus) , (Sodium : Rickets) , (Iodine : Goitre) , (Iron : Anaemia)

B. SODIUM : RICKETS

Choose or find odd letter group - HGF , XWV , NML , OPQ , UTS

D. OPQ

Choose or find odd pair of words - (Shirt : Dress) , (Boy : Girl) , (Mango : Fruit) , (Table : Furniture)

B. BOY : GIRL

Choose or find odd word - Pupil , Iris , Cornea , Medulla , Retina

D. MEDULLA

Choose or find odd word - Teacher , Principal , Student , Lecturer

C. STUDENT