Correct option is C
The Hill Area Development Programme (HADP) was initiated during the Fifth Five Year Plan (1974–1979). This program was specifically designed to address the special needs and challenges of the hill areas of India.
The Fifth Five Year Plan emphasized regional imbalances and the need for focused development in specific regions like hill areas, backward areas, and tribal zones.
HADP was introduced to improve agriculture, transportation, water supply, and overall infrastructure in the hilly regions.
The program was a targeted effort to bring economic development to regions that faced geographical and climatic challenges, including parts of Himalayas and Northeastern India.
Additional Information:
Sixth Five Year Plan: The Sixth Plan (1980–1985) followed up with more focused attention on environmental issues.
Eighth Five Year Plan: This plan focused more on economic liberalization and human development.
Fourth Five Year Plan: The Fourth Plan (1969–1974) was focused on self-reliance and poverty reduction.