Peter, the marketing manager of a company that manufactures furniture, has been given the task of increasing the sale of the company's office furniture line in the upcoming quarter. As Peter has other tasks lined up, he gives his assistant the full responsibility and authority to develop a mailing campaign that would target all the offices in the entire state. In other words, Peter has _____.

a. delegated the task

b. exercised staff authority

c. created a staff position

d. centralized the task