Which adaptations in fishes enabled vertebrates to thrive on land?

Question

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The adaptation of limbs and lungs enabled vertebrates to move onto land. Limbs allowed for movement on land, while lungs allowed for breathing air instead of water. Fins and lungs (choice C) are not sufficient to allow for movement on land. Lungs alone (choice D) may have allowed for breathing air, but not for movement on land. Limbs alone (choice E) would have facilitated movement on land, but would not have allowed for breathing air, which is necessary for survival on land.

Which Adaptations in Fishes Enabled Vertebrates to Thrive on Land