A 2-month-old is suspected of having coarctation of the aorta. What is the cardinal sign of this defect? A. Clubbing of the digits and circumoral cyanosis. B. Pedal edema and portal congestion. C. Systolic ejection murmur. D. Upper extremity hypertension.

b

explanation:

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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