Which is not correct for marasmus?

What are the basic requirements of humans?

Vasco de Gama $(1498)$ sailed to explore India with $180$ companions,but most of them died due to:

Which of the following is the best source of protein for a vegetarian person in India?

Which group of three of the following five statements $(I-V)$ is correct regarding beriberi?
$I.$ $A$ crippling disease prevalent among the native population of sub-Sahara Africa.
$II.$ $A$ deficiency disease caused by lack of thiamine (vitamin-$B_{1}$).
$III.$ $A$ nutritional disorder in infants and young children when the diet is persistently deficient in essential protein.
$IV.$ Occurs in those countries where the staple diet is polished rice.
$V.$ The symptoms are pain from neuritis,paralysis,muscle wasting,progressive oedema,mental deterioration and finally heart failure.

Defective red blood corpuscles can be seen when there is a deficiency of