Which of the following most accurately summarizes the findings of the 40-year fox-breeding study described in the text?
A) Wild foxes cannot be domesticated.
B) "Survival of the fittest" seems to operate only when animals live in their natural habitats.
C) By mating aggressive and unaggressive foxes,the researchers created a mutant species.
D) By selecting and mating the tamest males and females,the researchers have produced affectionate,unaggressive offspring.
Correct Answer:
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