EduGoog

Explosion : I : : Locust : II
    I.   [A] Bomb  [B] Ruin  [C] Debris  [D] Smoke
   II.   [P] Crop  [Q] Holocaust  [R] Pest  [S] Field

 

Option:
A. AS
B. BR
C. CQ
D. DP
Answer: C . CQ

Justification:

Second is the left-over after the first.

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