Fiber-containing formulas would most likely be used for what condition?

A fibre-containing formula would most likely be used to patients who are under enteral nutrition.
An enteral nutrition is the administration of food through the use of a feeding tube, which is inserted either in the nose, the stomach or the small intestine. Fibre-containing formulas are used to improve faecal bulk, treat diarrhoea or constipation and maintain healthy blood-glucose levels. 

Where are the following choices