Answer:
Harmful
Step-by-step explanation:
The text says:
(7) In many situations, animals apparently view roads as a barrier to movement and do not even try to cross them. Ultimately, this can lead to dividing a formerly single population into two or more separated, and sometimes even isolated, population segments. As with what is happening with the mountain lion population in the Santa Monica Mountains, this can cause a range of adverse effects, including a lack of genetic diversity. Roads like Highway 118, though they are far smaller and have far less traffic than Route 101, generally present more of a mortality threat for wildlife.
So therefore harmful makes the most sense
I also just did this myself on plato so I know it's correct