Scientific argumentation can be a pathway to A. finding the answers to a problem

B. deciding which is the best procedure to follow

C. a debate between two scientists

D. alternative explanations

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.