Standard Definition of Unemployment Steps:

• Identify the economic definition: A person is unemployed if jobless, actively seeking work, and available/willing to accept a job at the prevailing wage.
• Analyze gap 1: It requires adjectives describing readiness to work (available and willing).
• Analyze gap 2: It specifies the wage level (the current or market rate).
• Test options: Only one forms a coherent sentence matching the definition.

Why C is correct:

• "Available and willing to work at the current wage" aligns with the Bureau of Labor Statistics definition, emphasizing readiness at market rates despite active search.

Why the others are wrong:

• A: "Able to work at below current wage" implies acceptance of sub-market pay, not the standard criterion for unemployment measurement.
• B: "Able to work at available and willing above the current wage" is grammatically incorrect and suggests demanding higher pay, excluding voluntary unemployment.
• D: "Available to work at available and willing above current wage" repeats terms awkwardly and implies above-market wages, contradicting the definition.

Final answer: C