The correct options are
A It is a protein deficiency disease.
B It leads to accumulation of water in intercellular spaces.
C It leads to poor muscle development.
D It leads to swollen legs, fluffy face, diarrhoea, etc.
Kwashiorkor is a protein deficiency disease. Due to the deficiency of protein, the muscle development is very poor and skin remains dry.
It causes accumulation of water in intercellular spaces which leads to the swollen legs, fluffy face (which makes it difficult to eat), diarrhoea, etc.