Numerical answer
The four sentences below, numbered 1-4, can be arranged into a coherent paragraph. Decide on the correct order and key in the sequence of numbers (e.g., 4123) as your answer.
1. The chief obstacle, however, was not conceptual but logistical: refrigerated rail cars did not yet exist at a scale that could serve the whole country.
2. Long before supermarkets existed, reformers in several industrial cities had already proposed centralising food distribution to cut out costly middlemen.
3. Once refrigerated rail networks matured in the following decades, the same centralising logic reappeared and finally succeeded, in the form of the modern supermarket chain.
4. Their proposals, circulated in pamphlets and civic meetings, generated enthusiasm but were never implemented at any meaningful scale.
1. The chief obstacle, however, was not conceptual but logistical: refrigerated rail cars did not yet exist at a scale that could serve the whole country.
2. Long before supermarkets existed, reformers in several industrial cities had already proposed centralising food distribution to cut out costly middlemen.
3. Once refrigerated rail networks matured in the following decades, the same centralising logic reappeared and finally succeeded, in the form of the modern supermarket chain.
4. Their proposals, circulated in pamphlets and civic meetings, generated enthusiasm but were never implemented at any meaningful scale.
Show answer and solution
Answer: 2413
Sentence 2 introduces the reformers' proposal (the topic opener). Sentence 4 follows naturally, describing what happened to that proposal ('their proposals... never implemented'). Sentence 1 then explains why it failed ('the chief obstacle'). Sentence 3 closes by describing the later success once that obstacle was resolved. The coherent order is 2-4-1-3.
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