Help me please with this biology

Question 1 of 102 pointswhich best describes adaptive radiation? oa. geographical isolation caused by an adaptationob. biodiversity resulting from few ancestorsoc. a decrease in the rate of speciationd. adaptations that organisms teach each other

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?

What is the primary function of the nervous system?