Tyrone manages a small lakefront shop that sells fishing tackle and boating gear. One of Tyrone's employees recently suggested that the shop begin to sell variety bags of 3 or 4 fishing lures. Tyrone implemented this idea and the shop now averages selling five variety bags each day. Tyrone's acceptance and implementation of the employee's idea shows that he embraces the____role.
a. resource allocator
b. entrepreneur
c. developer
d. liaison