DigiDesign Inc. wants to implement improved cost$-$efficient procedures for its existing operations. It encourages its employees to think "inside the box." The entire work process is broken down into component parts. Employees are asked to focus on the internal aspects of work operations to come up with valuable new ideas for productive ways that different departments can function efficiently and effectively. Which concept below best illustrates this scenario?

a$.$ Lateral thinking

b$.$ Corporate entrepreneurship

c$.$ Immersion

d$.$ Idea incubator