The birds of New Zealand had no natural predators, wings became unnecessary, and many varieties, including the kiwi and the kakapo parrot, became flightless. A. The birds of New Zealand had no natural predators, wings became unnecessary, and many varieties, including the kiwi and the kakapo parrot, became flightless.
B. The birds of New Zealand had no natural predators; wings becoming unnecessary and many varieties, including the kiwi and the kakapo parrot, becoming flightless.
C. Because the birds of New Zealand had no natural predators, wings are becoming unnecessary, and many varieties, including the kiwi and the kakapo parrot, are becoming flightless.
D. Since the birds of New Zealand had no natural predators; wings became unnecessary and many varieties, including the kiwi and the kakapo parrot, became flightless.
E. Because the birds of New Zealand had no natural predators, wings became unnecessary, and many varieties, including the kiwi and the kakapo parrot, became flightless.