Which of the Following Statements About the Transition from Ocean

Which of the following statements about the transition from ocean to land by plants is most likely to be accurate?

A) The transition to land occurred within a few generations.
B) The transition to land was likely gradual, with plants evolving traits that let them survive ever-drier conditions.
C) Rising sea levels favored individuals that were able to survive ever-drier conditions.
D) The high light levels of terrestrial systems favored individuals that contained flexible photosynthetic enzyme systems.