Q: Fact 1: Cross-pollination increases genetic diversity. Fact 2: Biodiversity is basically genetic diversity. Given the two facts above, what increases biodiversity?

Pick your answer from: (i) Reproduction (ii) cross-pollination (iii) By coral exoskeletons (iv) gene flow (v) Quality of life (vi) self-pollination (vii) asexual reproduction (viii) extinction
A:
(ii)