Choose or find odd word - Admiral , Colonel , Captain , Commodore , Lieutenant

B. COLONEL

Choose or find odd word - Correction , Improvement , Betterment , Elevation

D. ELEVATION

Choose or find odd word - Mosses , Lichens , Ferns , Cacti

D. CACTI

Choose or find odd word - Polar bear , Reindeer , Yak , Silver fox , Leopard

E. LEOPARD

Choose or find odd word - Othello , King Lear , Oliver Twist , Macbeth

C. OLIVER TWIST