Hello,
The answer is for sure <span>A. O horizon</span>.Positive.
Hope this helps
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately
<span>It is the kidneys, ureters, urinary bladder, and the urethra (I 99% sure thats the main ones)</span>