Which cost driver do you prefer for the Landscape Design activity? Why? While the Wolcott Office park landscape design is only one of 31 performed by Oakhurst USA, it accounts for less less more landscape design-hours, making it less less more complex than the average design. Using the number of landscape designs landscape designs landscape design-hours as the cost driver results in a bid estimate that is too low. Using the number of landscape design-hours landscape designs landscape design-hours is a more accurate measure of Oakhurst USA's costs for each job because it results in a more competitive bid price. distinguishes the costs between simple and complex landscape designs. results in a more competitive bid price. simplifies the cost allocation process