Which situation describes the use of a credit card

a. ryan entered his pin to complete a transaction.

b. ryan overdrew his checking account.

c. ryan bought groceries and paid for them at the end of the month.

d. after making a purchase, ryan recorded the information in his check register.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation:

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.