Final answer:
The World Bank is the specialized agency of the United Nations that assists member nations in rebuilding devastated areas and financing new programs. Its efforts are aimed at reducing poverty and enhancing economic development in developing countries. Other UN agencies focus on different areas such as education, health, and child welfare.
Explanation:
Specialized Agency of the United Nations
The specialized agency of the United Nations that helps member nations rebuild devastated areas and finance new programs is the World Bank. Established in 1944, the World Bank provides financial and technical assistance to developing countries. Its primary goal is to reduce poverty by providing funds for development projects that improve economic prospects and quality of life. For instance, after natural disasters, the World Bank often steps in to help nations rebuild infrastructure or restore public services.
Other agencies mentioned in the question, such as UNESCO, which focuses on education, science, and culture, UNICEF, which aids children and mothers, and the WHO (World Health Organization), which specializes in health issues, do not primarily focus on financing and rebuilding infrastructure on a national level.
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