单选题 Which of the following types of unemployment is most likely to be associated with an economy in which many workers have been made obsolete by changing technology?

A. Cyclical.
B. Marginal.
C. Structural.

【正确答案】 C

【答案解析】Structural unemployment results from changes in the basic characteristics of the economy, such as changes in technology or international competition, which typically require changes in skills needed to perform jobs.