Read the paragraph and answer the following question.

Although a large section of people suffer from food and nutrition insecurity in India, the worst affected groups are landless people with little or no land to depend upon, traditional artisans, providers of traditional services, petty self-employed workers, and the destitute including beggars. In the urban areas, the food-insecure families are those whose working members are generally employed in ill-paid occupations and the casual labor market. These workers are largely engaged in seasonal activities and are paid very low wages that just ensure bare survival.

The social composition along with the inability to buy food also plays a role in food insecurity. The SCs, STs and some sections of the OBCs (lower castes among them) who have either poor land base or very low land productivity are prone to food insecurity. The people affected by natural disasters, who have to migrate to other areas in search of work, are also among the most food-insecure people. A high incidence of malnutrition prevails among women. This is a matter of serious concern as it puts even the unborn baby at risk of malnutrition. A large proportion of pregnant and nursing mothers and children under the age of 5 years constitute an important segment of the food insecure population.

Which of the following is worst affected by food security?