Will mark brainliest if someone answers this

i cant see the picture its blocked :((( (im on a chromebook)

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.  

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.