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Answer: Tetrapods
Explanation:
Tetrapods are the most recent common ancestor with the lungfish look like.
Ancient species of lung fish are the ancestors of tetrapods. These fish may live on land, breathing air and being propelled by their pelvic fins. Australia has three populations of the few remaining lungfish — two marine populations and one inhabiting the Mary River basin in Queensland.
Hence, tetrapods are most common ancestors with lung fish.
Organisms usually rely on fermentation if they are small since fermentation produces little energy and it is not enough for larger organisms' highly complicated processes. In addition, it occurs usually as a last resort when nothing else works.
That's easy it would be A) <u>Chemoautotroph</u>
The answer for this question is True