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.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.