D Rationale: Recession is part of the business cycle: demand for output and jobs falls, and
unemployment rises until recovery is well under way. Option A is an example of frictional
unemployment; option B of seasonal unemployment; option C of technological unemployment.
Pitfalls: It is easy to confuse cyclical with seasonal unemployment, or frictional unemployment
that occurs on a seasonal basis (eg option A). You need to associate cyclical employment firmly
with business cycles.