Numerical answer
The four sentences below, when properly sequenced, form a coherent paragraph. From the options given, choose the most logical order.
1. Bee colonies, it turns out, use a strikingly similar mechanism: when a scout bee finds a promising nest site, it performs a waggle dance whose vigour signals the site's quality to other scouts.
2. Quorum sensing, long studied in bacteria, describes how individual organisms coordinate collective behaviour once enough of them detect a shared chemical signal.
3. Once enough scouts have been persuaded to dance for the same site — a rough biological quorum — the swarm commits to it and relocates as one.
4. The parallel suggests that decentralised group decision-making may rely on a small number of recurring logical structures across very different biological systems.
1. Bee colonies, it turns out, use a strikingly similar mechanism: when a scout bee finds a promising nest site, it performs a waggle dance whose vigour signals the site's quality to other scouts.
2. Quorum sensing, long studied in bacteria, describes how individual organisms coordinate collective behaviour once enough of them detect a shared chemical signal.
3. Once enough scouts have been persuaded to dance for the same site — a rough biological quorum — the swarm commits to it and relocates as one.
4. The parallel suggests that decentralised group decision-making may rely on a small number of recurring logical structures across very different biological systems.
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Answer: 2134
Sentence 2 defines the general concept (quorum sensing in bacteria). Sentence 1 introduces the bee parallel ('a strikingly similar mechanism'). Sentence 3 continues the bee example to its conclusion (quorum reached, swarm relocates). Sentence 4 draws the broader conclusion from the parallel. The order 2-1-3-4 moves cleanly from definition to example to example's conclusion to general inference.
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