What can be concluded from the last sentence?
On a hot day, the temperature inside a honeybee hive must stay close to a steady level, or the young bees developing inside the wax cells can be harmed. To prevent this, some workers stand at the entrance and fan their wings, pushing warm air out. Others collect water and spread tiny droplets across the comb. As the water evaporates, the heat in the hive drops, in the same way that sweat cools human skin. Few creatures work together so precisely to regulate the temperature of their home. Scientists studying the hive have found that no single bee gives the orders: each worker simply responds to the heat around it.
Answer and explanation
Correct answer: B. The hive's cooling works without a leader directing each bee.
Answer: no leader directs the cooling. Why not the others: The passage rules out orders from any single bee, and scientists only observed the bees.
- Step 1: The last sentence says no single bee gives orders.
- Step 2: Each bee reacts to local heat.
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