Step 1: About DPEP.
The District Primary Education Programme (DPEP) was launched in 1994 in India to universalize primary education and improve the quality of learning in schools.
Step 2: International support.
Although the programme received financial assistance from agencies like the World Bank, DFID (UK), and UNICEF, the technical support and global educational expertise came primarily through UNESCO, which played a central role in capacity building, training modules, and monitoring educational standards.
Step 3: Elimination of wrong options.
- (a) IMF → Deals mainly with monetary and financial stability, not education.
- (b) World Bank → Provided financial help, but UNESCO's support was the central technical backing.
- (d) Japanese Government → Extended help in other infrastructure projects, not DPEP. \[ \Rightarrow \boxed{\text{The District Primary Education Programme is supported by UNESCO.}} \]
Each organisation's usual area of work can be compared with what the District Primary Education Programme actually needed.
Given UNESCO's core mandate in education, it lines up with option 3.
Hence, the correct answer is UNESCO.