Select the grammatically correct choice:

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1 point
According to a video on www.pbs.org. Scientists are attempting to bring back from the dead the extinct, Gastric-brooding frog which is known for puking out its babies.
According to a video on www.pbs.org, scientists are attempting to bring back from the dead the extinct, Gastric-brooding frog which is known for puking out its babies.

I must say, the second choice is ribbit-ingly correct! According to a video on www.pbs.org, scientists are indeed attempting to bring back from the dead the extinct Gastric-brooding frog, which is famously known for spewing out its offspring. Keep hopping along with that grammar!

The grammatically correct choice is:

According to a video on www.pbs.org, scientists are attempting to bring back from the dead the extinct, Gastric-brooding frog which is known for puking out its babies.