Five jumbled sentences (labelled 1, 2, 3, 4, and 5), related to a topic, are given below. Four of them can be put together to form a coherent paragraph. Identify the odd sentence out.
1. The human gut hosts trillions of microorganisms that are essential for digesting food and synthesizing vitamins.
2. Recent research has revealed that these gut microbes also communicate directly with the central nervous system.
3. To investigate this connection, scientists have begun analyzing the gut microbiomes of patients with neurological disorders.
4. This "gut-brain axis" influences everything from mood regulation to stress response and cognitive function.
5. Consequently, medical researchers are now exploring whether probiotics can be used to treat conditions like anxiety and depression.
1. The human gut hosts trillions of microorganisms that are essential for digesting food and synthesizing vitamins.
2. Recent research has revealed that these gut microbes also communicate directly with the central nervous system.
3. To investigate this connection, scientists have begun analyzing the gut microbiomes of patients with neurological disorders.
4. This "gut-brain axis" influences everything from mood regulation to stress response and cognitive function.
5. Consequently, medical researchers are now exploring whether probiotics can be used to treat conditions like anxiety and depression.
Answer and solution
Correct answer: 3
Solution
Sentences 1, 2, 4 and 5 form the paragraph: 1 introduces the gut microbiome; 2 the link to the brain; 4 the functions of the "gut-brain axis"; 5 a practical implication (probiotics). Sentence 3 shifts to the methodology of studying the link, interrupting the flow.