What is most likely to occur if a new road is built through a forest and uses barriers throughout the forest?

Question

The barrier will not affect the animals in the forest.
All animals in the forest will experience mutations. Over time, new animal species will be created and geographically separated using the barrier.
All animals in the forest will experience mutations. Over time, the barrier will geographically isolate the animals, resulting in new species in the forest for each animal species.
The barrier will initially geographically isolate all of the animals in the forest. Over time, each animal species will experience mutation, resulting in new species of all animals in the forest.

Answer 1

The most likely scenario among the options provided is:

The barrier will initially geographically isolate all of the animals in the forest. Over time, each animal species will experience mutation, resulting in new species of all animals in the forest.

This option accurately reflects the consequences of constructing a barrier in a forested area. When a road with barriers is built, it can physically separate animal populations, limiting their ability to interbreed. This geographical isolation can lead to different selective pressures on the separate populations, which may result in various mutations over time. These mutations, combined with natural selection, can ultimately lead to the emergence of new species as the populations adapt to their distinct environments.