Structural unemployment from declining manufacturing sector

Steps:

• Note the decline in manufacturing's GDP share from 30% to 12% over decades, signaling a long-term economic shift.
• Recognize this reduces demand for manufacturing jobs, displacing workers.
• Identify that affected workers' skills may not match emerging sectors like services or tech.
• Conclude this creates persistent joblessness due to structural mismatch.

Why C is correct:

• Structural unemployment arises from changes in industry composition, causing skills gaps between workers and new job needs, as defined in labor economics.

Why the others are wrong:

• A: Cyclical unemployment stems from economic recessions or booms, not sectoral declines.
• B: Frictional unemployment involves temporary job searches between roles, not skill mismatches.
• D: Voluntary unemployment occurs when workers opt out of the labor force, unrelated to industry shifts.

Final answer: C