Option C — United Nations Development Programme (UNDP)
The Human Development Report is published by the UNDP (United Nations Development Programme), which compares countries based on educational levels, health status, and per capita income.
Source: Chapter 1, Human Development Report section
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The passage directly states: "Human Development Report published by UNDP compares countries based on the educational levels of the people, their health status and per capita income." Examiners expect the full form (UNDP = United Nations Development Programme) for full marks. Do not confuse it with WHO (health) or World Bank (income only).