Correct Answer: Both assertion and reason are true, and the reason is the correct explanation of the assertion.

Solution : The correct option is (a) Both assertion and reason are true, and the reason is the correct explanation of the assertion.

The assertion that human capital development promotes social mobility is true. Social mobility refers to the ability of individuals to move up or down the social ladder based on their socioeconomic status. Human capital development, which includes improving skills and education, plays a crucial role in facilitating upward social mobility. When individuals have access to quality education and opportunities for skill development, they are better equipped to secure higher-paying jobs, gain promotions, and improve their socioeconomic status. Human capital development empowers individuals with the tools and capabilities needed to enhance their prospects for upward mobility in society.

The reason provided states that improved skills and education provide individuals with better opportunities for upward mobility, which is a correct explanation of the assertion. Higher levels of education and improved skills enhance individuals' qualifications and competitiveness in the labor market, increasing their chances of securing higher-paying jobs and advancing in their careers. These improved opportunities contribute to upward social mobility as individuals experience improvements in their socioeconomic status and access to resources and opportunities.

Therefore, both the assertion that human capital development promotes social mobility and the reason that improved skills and education provide individuals with better opportunities for upward mobility are true, and the reason is the correct explanation of the assertion.