Which factor can drive the divergence of two populations leading to speciation?

The factor that can drive the divergence of two populations leading to speciation is reduced interbreeding due to habitat differences. When populations occupy different habitats, they become geographically or ecologically isolated from one another. This isolation limits interactions and mating opportunities between the two groups, which can lead to the accumulation of genetic differences over time as each population adapts to its specific environment.

As these populations diverge, they may develop unique adaptations, behaviors, and traits that make them increasingly different from each other. Over generations, these differences can become significant enough to result in reproductive barriers, ultimately leading to the formation of new species.

In contrast, increased genetic variation, similar environmental conditions, and equal access to resources typically promote gene flow and maintain genetic similarity between populations, which is contrary to the process needed for speciation. These factors do not contribute to the divergence necessary for the development of distinct species.