Multiple choice

Find the appropriate word and fill blank (iii).

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.

  1. progressive

  2. alternative

  3. rhythmic

  4. delayed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The passage describes how dietary fibre affects intestinal function. Intestinal contractions occur in a regular, wave-like pattern called peristalsis. 'Rhythmic' best describes these recurring muscular contractions that move food through the digestive tract. 'Progressive,' 'alternative,' and 'delayed' don't accurately describe the nature of intestinal muscle activity.

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