Five islands, A, B, C, D, and E, differ only in distance from the mainland, area, and species diversity. Which island would be predicted to have the highest species diversity?

B 50 1 x 106

Explanation:

The largest Island and the one that is closest to the mainland would mean that such Island would have more biodiversity. 50 km from the mainland is a considerably close distance and the largest with 1*10^6 hectares represents a huge area that would allow for more biodiversity.