On a rainy day, a truck shipping seeds of a shrub for a reforestation effort slides and crashes, spilling the seeds. The heavy rain washes some of the seeds into the hillside. Years later, the shrubs have grown and spread from the area surrounding the site of the accident. Which of the following factors should be considered in restoration efforts? I. eliminate the invasive species of plant with herbicides II. ensure the ecosystem is able to thrive without the plant III. identify the species present before the accident occurred a. I only
b. II only
c. I and II only d. I and III only e. II and III only