The correct option is "1 only" because the Bharat Forecast System indeed aims to generate high-resolution weather forecasts at very localized levels, specifically down to Panchayats, enhancing the granularity of climate data crucial for local decision-making. However, it was not developed by IIT Delhi; instead, it is a collaborative initiative involving multiple institutions and entities under the Ministry of Earth Sciences. This distinction is essential for understanding the integration of technology and local governance in disaster management and agricultural planning, which aligns with UPSC's focus on how innovations can serve societal needs.