Which of the following is a protein-energy malnutrition related disorder?

Match the items given in column $I$ with those in column $II$ and choose the correct option.

Column $I$	Column $II$
$(a)$ Rennin	$(i)$ Vitamin $B_{12}$
$(b)$ Enterokinase	$(ii)$ Facilitated transport
$(c)$ Oxyntic cells	$(iii)$ Milk proteins
$(d)$ Fructose	$(iv)$ Trypsinogen

$A$ healthy person eats the following diet: $5 \, gm$ raw sugar,$4 \, gm$ albumin,$10 \, gm$ pure buffalo ghee adulterated with $2 \, gm$ vegetable ghee (hydrogenated vegetable oil),and $5 \, gm$ lignin. How many calories is he likely to get?

Which one of the following statements is/are correct?
$I.$ Frenulum is the fold by which the tongue is attached to the floor of the mouth or oral cavity.
$II.$ The lower surface of the tongue has small projections which bear taste buds.
$III.$ The pharynx is the common passage for food and air.
$IV.$ The sphincter of Oddi guards and regulates the opening of the stomach into the duodenum.
$V.$ The colon is divided into an ascending,a transverse,a descending part,and a sigmoid colon.

State the function of saliva.