In the case of peppered moth ( Biston betularia ) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of -

1. A. Inheritance of darker colour character acquired due to the darker environment
2. B. Natural selection whereby the darker forms were selected.
3. C. Appearance of the darker coloured individuals due to very poor sunlight
4. D. Protective mimicry

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