Final answer:
The natural rate of unemployment may be higher in low-income countries due to low skills and education levels, as well as the lack of efficient labor market regulations.
Step-by-step explanation:
The natural rate of unemployment may be higher in low-income countries due to various factors. One significant factor is low skills and education levels, which can limit the job opportunities available to workers and make it harder for them to find employment that matches their capabilities. In many low-income countries, the workforce may not be as well-equipped with the education and vocational skills needed to fulfill the demands of more advanced job sectors.
Additionally, the absence of efficient labor market regulations, which are more common in high-income countries, can contribute to a higher natural rate of unemployment as there may be less protection and support for employees. Contrary to low-income countries, high-income economies often have better infrastructure and government programs, like unemployment insurance and welfare, which can cushion the effects of unemployment. Advanced technological infrastructure, which is mentioned in option (b), is not typically a reason for higher unemployment in low-income countries and can be disregarded in this context.