Retraining boosts workers' ability to switch jobs

Steps:

• Define occupational mobility as the ease with which workers shift between different jobs or industries.
• Evaluate how each option affects skill acquisition and job adaptability.
• Identify retraining as directly enhancing transferable skills for new roles.
• Confirm it increases mobility by reducing barriers to entering varied occupations.

Why B is correct:

• Retraining equips workers with new skills, directly increasing occupational mobility by enabling transitions between unrelated jobs, per labor economics definitions.

Why the others are wrong:

• A: Raises barriers like qualifications, decreasing mobility by limiting job access.
• C: Narrows skills to specific tasks, reducing flexibility for other roles.
• D: Improves geographical mobility via easier travel but does not address occupational shifts.

Final answer: B