The correct option is D Proteins and calories
Marasmus is caused due to the deficiency of proteins and calories. It is seen in infants who are less than a year old.
It occurs if the mother’s milk is not given to the infant and is replaced too early with other food items that are not rich in both proteins as well as calories.
Infants suffering from marasmus have thin limbs, sunken eyes, dry skin, thin, and wrinkled appearance. The growth rate and bodyweight decrease considerably. The development of the brain is also affected.
Kwashiorkor is caused due to the deficiency of proteins and unaccompained by calorie deficiency.