Question ID:PT89 S2 Q3 Passage:Biologist: DNA analysis shows that Acacia heterophylla, a tree native to the Indian Ocean's R√©union Island, is descended from the Hawaiian tree Acacia koa. Some think this occurred because A. koa seeds floated from Hawaii to R√©union, but that explanation is implausible, since the seeds will not germinate after being soaked in seawater. Moreover, both trees grow in the mountains, not near the shore. Seabirds sometimes carry seeds great distances, so they probably caused the dispersal. Stem:Which one of the following, if true, most strengthens the support for the biologist's hypothesis? Correct Answer Choice:BChoice A:A. koa branches carrying seeds can remain afloat for prolonged periods of time. Choice B:There are mountain-nesting seabird species common to R√©union and Hawaii. Choice C:A. koa is thought to be descended from Acacia melanoxylon, a tree native to eastern Australia. Choice D:Ocean currents have sometimes carried buoyant objects from Hawaii to R√©union. Choice E:Many seabird species return to land very infrequently, and often do so only to breed.