The best answer is: introducing exotic species into
new environments. This can be actually bad, as new species can actually reduce the biodiversity in the environments to which they're introduced , such when cats hunt indigenous birds.
I was a bit thinking about the last option too: making sure local people benefit from conservation efforts.
This is not one of the classical goals of the conservation efforts, but since the previous one is definitely correct, i don't this one is. (it's not that it's not a goal, but it isn't a main focus)
