For Boeing's $787$ Dreamliner, some $70\%$ of the $$8$ billion development cost is outsourced to suppliers: Mitsubishi makes the wings, Messier$-$Dowty provides the landing gear, and so forth. Many suppliers are responsible for the end$-$to$-$end design of whole subsections. Headed by a vice president for global partnerships, Boeing treats its suppliers as partners, has partner councils with regular meetings, and fosters long$-$term collaboration. What is this an example of$?$

a$.$ adaptability

b$.$ agility

c$.$ accessibility

d$.$ alignment