Which question would MOST help a scientist determine the level of biodiversity, that exists among the thirteen species of finch on the Galapagos Islands?

Explanation:

Comparisons of DNA sequences revealed the evolutionary relationships among finch species. The data showed that all finch species living in the Galápagos Islands today are more closely related to one another than to any species of birds on the mainland, suggesting that they originated from a common ancestor.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

c is the correct answer hope this !