Option 1 includes cotton, tobacco, and sugarcane. While these crops are valuable and have various uses, they are not considered food crops. Cotton is primarily used for textile production, tobacco for smoking, and sugarcane for producing sugar.

Option 2 includes linseed, castor, and turmeric. Again, these crops have different uses, but they are not commonly consumed as food. Linseed and castor are mainly grown for their oils, while turmeric is used as a spice and for its medicinal properties.

Option 4 includes jute, cotton, and chillies. Jute is used to make fibers for bags and other products, and while cotton and chillies are consumed, they are not the primary food crops.

Option 3 is the correct answer. Food crops such as grains (like rice, wheat, and corn), pulses (like lentils and beans), and edible oilseeds (like soybean and sunflower) are vital for providing sustenance and nutrition to humans. These crops are cultivated for their edible parts and are a crucial component of our diet.