Which situation is an example of non-native species introduction

Which situation is an example of nonnative species introduction? A huge volcanic eruption in Washington destroyed many habitats. A large oil spill in the Gulf of Mexico killed many organisms that lived there. Horseshoe crabs in the waters of Virginia have been overfished, and their numbers have declined.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.