Which row in the chart below indicates the correct process for each event indicated? *

the answer is "a.) well–developed vascular system."

explanation:

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.