Choose or find odd word - Mahanadi , Cauvery , Narmada , Krishna

C. NARMADA

Choose or find odd letter group - OTP , ABA , SZX , UVB , YQR

B. ABA

Choose or find odd letter group - MEWGN , PBQTX , DRYSN , CGHKV , HLWZP

A. MEWGN

Choose or find odd number - 27 , 125 , 343 , 729 , 1321

E. 1321

Choose or find odd word - Doe , Bitch , Sorceress , Drone , Mare

D. DRONE