Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph.
A. According to his hypothesis, now known as the neuron theory, each nerve cell communicates with others through contiguity rather than continuity.
B. The watershed of all studies of the nervous system was an observation made in 1889 by Spanish scientist Santiago Ramón y Cajal.
C. It has since been proved that Cajal’s theory is not universally true, but his central idea has remained an accurate guiding principle for all further study.
D. That is, communication between adjacent but separate cells must take place across the space and barriers separating them.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. BADC.
While arranging the parts of the passage, we should find some grammatical or contextual connections between them. Also, the first sentence of a passage is usually independent and introduces a topic. The second one provides more information about it.
Steps to arrange the sentences in the correct order to form a meaningful and coherent paragraph:
- Sentence B is the independent sentence as it is giving general information about "an observation by Spanish scientist Santiago Ramón y Cajal". So, sentence B is the first sentence after rearrangement.
- Sentence A will come after B as it is explaining the observation made by the scientist i.e. the neuron theory.
- Sentence D will come after A as it is further explaining the neuron theory.
- Sentence C is the concluding statement of the passage because it is talking about the final output of the theory.
- Thus, the correct order after rearrangement is option 1 i.e. BADC.
The paragraph is: The watershed of all studies of the nervous system was an observation made in 1889 by Spanish scientist Santiago Ramón y Cajal. According to his hypothesis, now known as the neuron theory, each nerve cell communicates with others through contiguity rather than continuity. That is, communication between adjacent but separate cells must take place across the space and barriers separating them. It has since been proved that Cajal’s theory is not universally true, but his central idea has remained an accurate guiding principle for all further study.
Hence, the correct answer is Option 1 i.e. BADC.