Concept:
UDISE (Unified District Information System for Education) collects school education data in India, while NITI Aayog analyzes development indicators. The dropout rate is an important measure of educational progress.
• Dropout rate shows students leaving school before completion.
• Lower dropout rate indicates better educational retention.
• A 0% dropout rate is a major achievement.
Step 1: Understand what primary school dropout means.
Primary school dropout means:
Students leaving school before completing primary education
Reducing this improves literacy and future opportunities.
Step 2: Recall the 2026 report finding.
According to the UDISE and NITI Aayog report:
Jharkhand achieved 0% primary school dropout rate
which was considered a major educational milestone.
Step 3: Eliminate incorrect options.
• Manipur -- incorrect
• Punjab -- incorrect
• Jharkhand -- correct
• Chhattisgarh -- incorrect
Step 4: Final conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Jharkhand}}
\]