Trigonometry question please help

i think is 3 and 6. this took me 10 min to think.hope to and hope that my answer is brainliest.(follow me )

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.  

i believe it's a.

i'm not sure on this one, most likely correct.