Question

central ideas and details: foundations
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shimmering is a collective defense behavior that researchers have observed in giant honeybee colonies. when shimmering, different groups of bees flip their bodies up and down in what looks like waves. this defense is initiated when hornets hover near a colony, serving to deter the hornets from approaching the bees. researchers hypothesize that this behavior is a specialized defense response to hornets, as it is not observed when other, larger predators approach the colony.
which choice best states the main idea of the text?
choose 1 answer:
a hornets are known to be the main predator of giant honeybees.
b several different species of insects use shimmering to defend against hornets.
c researchers think that shimmering in giant honeybees is a specific defense against hornets.
d researchers are unsure how giant honeybees defend against predators larger than hornets.

Explanation:

The text focuses on shimmering as a collective - defense behavior of giant honeybees against hornets, and researchers' hypothesis about its specificity to hornet threats. Option C captures this main idea.

Answer:

C. Researchers think that shimmering in giant honeybees is a specific defense against hornets.