Retraining Enhances Workers' Ability to Switch Occupations

Steps:

• Define occupational mobility as workers' ease in moving between different jobs requiring varied skills.
• Identify factors that directly improve skills or reduce barriers to job changes.
• Evaluate each option's impact on skill acquisition or job transition.
• Select the option most targeted at upskilling for new roles.

Why B is correct:

• Retraining schemes equip workers with new skills, directly increasing occupational mobility by enabling transitions to different job types, as per labor economics definitions of human capital investment.

Why the others are wrong:

• A: Building houses boosts housing supply but does not address skill gaps for job switching.
• C: Broad government spending may indirectly affect jobs but lacks focus on targeted skill development.
• D: Better job information aids geographical mobility more than occupational shifts requiring new skills.

Final answer: B