The risk of introducing a natural enemy to control an invasive species is that: The natural enemy may introduce genetic diversity into the invasive species. Thus, option "D" is correct.
Non-native species are considered to be invasive only when they cause harm.
Some of the features that increase the possibility of a non-native species becoming an invasive species are they reproduce easily, they are habitat generalists, they out-compete other plant species, possess the tendency to produce abundant seeds, and are not influenced by the native diseases and pests. Â
Thus, option "D" is correct.
To learn more about  invasive Species click here;
https://brainly.com/question/21452505
#SPJ1