The correct option is D Both statements are correct and statement 2 is not the correct explanation of statement 1.
Energy is required for all our activities. Carbohydrates and lipids are energy giving foods. When we sleep, all our internal processes continue to function. This requires energy. So, statement 1 is true.
Tiredness, weakness and lack of concentration are caused by insufficient intake of glucose but we should not consume carbohydrates and lipids in excess quantity as this will lead to weight gain and diseases such as diabetes. Hence, statement 2 is also true but it is not the correct explanation of statement 1.