Choose or find odd letter group - AUDIO , ARISE , AWAKE , VIDEO

C. AWAKE

Choose or find odd word - Beaver , Alpaca , Walrus , Koala

C. WALRUS

Choose or find odd pair of words - (Saw : Wood) , (Pen : Paper) , (Author : Book) , (Chalk : Blackboard)

C. AUTHOR : BOOK

Choose or find odd letter group - PRT , MOQ , GEC , TVX , SUW

C. GEC

Choose or find odd word - Birch , Spruce , Cedar , Maple , Ebony

E. EBONY