Answer:
The correct answer is option B) "The survival of the fittest due to competition for resources"
Step-by-step explanation:
Darwinian evolutionary theory explains that natural selection allows for the species improvement by the "survival of the fittest". Overproduction in a defined ecosystem would eventually lead to species improvement due to competition for resources. More individuals of animals and plants would need more resources to survive, the competition for resources would be a determinant factor for natural selection.