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B
Peppered Moth
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C
Monkey
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D
Frog
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Solution
The correct option is B Peppered Moth Industrial Melanism is the phenomenon studied by Barnard. Before the industrial revolution, the dull grey forms of peppered moth- Biston betularia were dominant, the Carbonaria form (Black) was rare because it was susceptible to predation by birds. The reason was that it was conspicuously visible while resting on tree trunks.