Based on the model, what will be the mean diameter of the phytoplankton cells that are found 25 kilometers from shore?

Hi!! I would place the characteristic 'terrestrial during all life stages' at point 3. This is because the stages preceding point three develop from the fully aquatic perch to the amphibious frog. The stages after point three are already fully terrestrial. Therefore, the ancestor at point 3 must be fully terrestrial or at least terrestrial for the majority of the time.

Hope it helps please MARK brainliest!!!