Correct Response: C. Pesticide resistance is a common problem that results from an adaptation in which the organisms that are most resistant to a pesticide are the ones most likely to survive and pass along that genetic trait to their offspring. Therefore, the percentage of pesticide-resistant organisms increases with each generation. Pesticide resistance is a much more likely adaptation than the evolution of a new digestive mechanism (A), an increase in the number of eggs laid by female insects (B), or a significant change in feeding habits (D).