Kwashiorkar is caused due to the deficiency of protein and meat, lentils, milk and eggs are rich sources of protein. Scurvy is caused due to deficiency of vitamin $\mathrm{C}$ whose sources are citrus fruit, tomatoes, peppers, leafy green vegetables. Deficiency of vitamin D (sources milk, egg yolk and liver) leads to rickets. Anaemia is caused due to deficiency of folic acid (sources yeast, liver, fish, green vegetables) or vitamin B, (sources - liver, eggs, meat, fish) or iron (egg yolk, spinach).
Related Theory
Marasmus is due to severe weight loss and muscle wasting due to lack of nutrition (protein) and calories while Kwashiorkor is due to edema due to water retention from lack of protein. Marasmic-kwashiorkor is a combination of muscle wasting and bilateral edema.