Boss tweed encourages his associates to work "like a well-oiled machine", thus providing his workers with

a. an analogy
b. a heuristic
c. an algorithm
d. functional fixedness ( not correct)

Boss tweed encourage his associates to work like a well oiled machine thus providing his workers with benefits that encourages them to work like a well oiled machine. A well oiled machine means that it does not stop, its work is continuous and efficient.