Fireflies in the Great Smoky Mountains are known for their unique ability to flash their lights in unison. Biologists have determined that the insects achieve this _______ by adjusting their internal rhythms to match the flashes of their neighbors, creating a stunning simultaneous light show.
Which choice completes the text with the most logical and precise word or phrase?
synchronization
hibernation
prediction
moderation
Correct Answer: A
Choice A is the best answer. The text states that the fireflies flash "in unison" and create a "simultaneous" light show. "Synchronization" refers to the operation or activity of two or more things at the same time or rate.
Choice B is incorrect because "hibernation" refers to a period of dormancy. Choice C is incorrect because "prediction" refers to forecasting, not the act of flashing together. Choice D is incorrect because "moderation" means the avoidance of excess.