Find the appropriate word and fill blank (iv).

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Dietary fibre is a carbohydrate that is incompletely absorbed in humans and some animals. Like all carbohydrates, when _____(i)______,it produces energy. However, it does not contribute much energy due to limitations on its _____(ii)_____ and digestion. Fibre provides bulk to intestinal contents and stimulates the ______(iii)______ muscular contractions of the intestines. For these reasons, fibre is important for digestive health. It helps ______(iv)_____ constipation and diarrhoea and is said to reduce colon cancer.