<prompt> Energy requirement in a 15kg normal body weight child is1000 Kcalkg1250 Kcalkg1500 Kcalkg1750 Kcalkg  <response>: In case of energy, advising intakes in excess or below the actual requirements is not safe. Calculation of energy requirement should account for the level of physical activity and the energy required to allow for optimal growth. For children with normal body weights, the energy requirements are calculating roughly as 100 kcal kg for the first 10 kg of body weight; between 10 and 20 kg, the requirement is 1000 kcal plus 50 kcalkg added for weight above 10 kg e.g. for a 15 kg child, the requirement will be 1250 kcal; and for weight more than 20 kg, 20 kcalkg is added to 1500 kcal to estimate the requirements e.g. for a 30 kg child the requirement is approximately 1700 kcal. Reference: Paediatrics; O.P Ghai; 8th edition; Page no: 90 