Indian Institute of Foreign Trade 2014 Solved Paper

Ruffle means disorder or disarrange. Equanimity means calm and composed. Ruffle and equanimity are almost antonyms. The only option that has this antonymous relationship is (b).
Bewilderment means confusion.
Flounce means an exaggerated action intended to express annoyance or impatience. Turmoil means a state of great disturbance, confusion or uncertainty. Interest and Astound are unrelated. Astound means shock or greatly surprise.