A) Caterpillar
B) Manure
C) Dust
D) Dry leaves
Correct Answer: C
Solution :
Caterpillar, manure and dry leaves-all help the soil to retain its fertility and richness. In short, they add life to the soil. In contrast, dust is dead. Plants grown in soil will flourish, but plants grown in dust will die. Therefore, option c is the odd one out.
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