Which one of the following is $NOT$ a cause of diarrhea?

Dark yellow urine,whitish stools,itching of skin,pale face,etc. are main symptoms of . . . . . . .

The disease due to inflammation of the vermiform appendix of the digestive system is known as:

Prolonged constipation may cause:

The Nobel Prize for Medicine was awarded for confirming the role of $Helicobacter \text{ } pylori$ in causing:

The following statements are about Marasmus. Select the correct statements.
$I-$ Found in infants less than one year of age.
$II-$ Skin becomes thick and wrinkled.
$III-$ Growth rate and body weight decline.
$IV-$ Impaired growth and development of brain and mental faculties.
$V-$ Protein deficiency,poor growth,replacement of tissue proteins,wasting of body,and thinning of limbs.