In the first paragraph, which line states a reason why humans are at fault for the lionfish problem? O What was once just an attractive aquarium fish has recently become one of the biggest menaces in the Atlantic
O The lionfish was accidentally introduced into the Atlantic Ocean in the 1990s.
O Because it has no natural predators, it has adapted quickly to its new home
The lionfish now threatens to destroy native fish populations in the Atlantic, Caribbean, and Gulf of Mexico.

Hey There!!

The answer to this is: When reading this, we saw how this lion fish was put into the Atlantic, and therefore, there's actually one thing that is actually something that we would want to consider, and that would actually indicate that it would be our answer.

Let's take notice in the paragraph on how the following sentence shows that this would be a total accident, and that this animal was putted in this location not by purpose, but by accident, and therefore, this was the actual lead on why humans are at fault for the lion fish problem.

The lionfish was accidentally introduced into the Atlantic Ocean in the 1990s.

This would be your answer, and this would be why it would be that they have adapted very quickly to their homes and all the they have now have.

Your The lionfish was accidentally introduced into the Atlantic Ocean in the 1990s.

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the correct answer is the first one.