Question

to obtain a license to work as a barber, hairstylist, or cosmetologist, one must graduate from a state - approved barber or cosmetology program and pass a state exam, limiting the number of people who can practice these professions. in this scenario, market failure would arise from:
irrationality.
market power.
externalities.
information problems.

Explanation:

1. Analyze each option:

• Irrationality: This refers to consumers or producers making non - optimal choices, which is not related to licensing requirements limiting market entry.
• Market power: Licensing creates a barrier to entry, reducing the number of suppliers. With fewer suppliers, those in the market (barbers, hairstylists, cosmetologists) can have more market power (ability to influence price or quantity) as competition is reduced. This can lead to market failure as the market may not be efficient.
• Externalities: Externalities are costs or benefits to third parties not involved in the transaction. Licensing for these professions is not about external costs or benefits.
• Information problems: Information problems involve asymmetric information (e.g., adverse selection, moral hazard) between buyers and sellers. Licensing here is about entry restrictions, not information asymmetry.

Answer:

market power.