Oliver works at Tate Corp., an apparel manufacturing company. He primarily focuses on the tastes and needs of the firm's customers. He achieves this by managing a team that regularly interacts with customers through various promotional activities and events. He also provides insights on how to produce eco-friendly outfits through cost-efficient manufacturing processes. This implies that Oliver:.
a. belongs to the external labor market.
b. is a knowledge worker.
c. encourages centralized decision making.
d. encourages a narrow business focus.
e. is an HR professional.

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.