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a
Three pairs of legs and three pairs of wings
b
Three pairs of legs and two pairs of wings
c
Two pairs of legs and three pairs of wings
d
Two pairs of legs and two pairs of wings
answer is B.
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Detailed Solution
Each thoracic segment bears a pair of walking legs. The first pair of wings arises from the mesothorax and the second pair from the metathorax. Wings are absent in the prothorax.