A boy observes a robin outside of his window. He notices the robin repeatedly cocks its head to one side before pecking the ground. The boy suspects that when the robin cocks its head it is actually listening for worms or insects underground. His explanation of the bird's behavior is an example of:
A) a hypothesis.
B) an observation.
C) an experiment.
D) a theory.
E) both a hypothesis and a theory.
Correct Answer:
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