Privatization enables private funding for public infrastructure

Steps:

• Identify the goal of privatization: shift from government ownership to private sector to improve efficiency and funding.
• Evaluate options: check which aligns with economic rationale for privatizing natural monopolies like railways.
• Eliminate mismatches: rule out options confusing public goods, surplus goals, or tax mechanisms.
• Confirm best fit: select the option addressing investment funding diversity.

Why B is correct:

• Privatization transfers ownership to private firms, attracting capital from investors, banks, and markets beyond limited government budgets, per economic theory on capital allocation.

Why the others are wrong:

• A: Railways are private goods (rival and excludable), not public goods like national defense, so this doesn't justify privatization.
• C: Privatized firms maximize profits, not producer surplus; governments privatize for efficiency, not surplus focus.
• D: Governments can tax private railway fares via regulations, so privatization isn't required for revenue.

Final answer: B