The correct answer is option 4: Himachal Pradesh. The Food Forecasting Stations (FFS) were established by the Central Water Commission to monitor and forecast the availability of water for agricultural purposes in different states of India. These stations provide valuable information regarding crop water requirements, irrigation scheduling, and drought management.

Options 1, 2, and 3 (Rajasthan, Jammu and Kashmir, and Tripura) are covered by the Food Forecasting Stations, meaning that they have an FFS set up by the Central Water Commission. These stations help in assessing the water needs for agriculture and provide timely information for better management of water resources.

However, option 4, Himachal Pradesh, is not covered by the Food Forecasting Stations. The reason for this exclusion is not explicitly mentioned, but it could be due to various factors such as the state`s relatively smaller agricultural area or sufficient water availability compared to other states.