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What is the most accurate way to determine the distance to a nearby galaxy?
Conditioned Response
A learned response to a previously neutral stimulus that has become conditioned through association with an unconditioned stimulus.
Conditioned Stimulus
An originally neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.
Unconditioned Response
An unconditioned response is an automatic, natural reaction to a stimulus, which does not require prior learning to occur.
Ivan Pavlov
A Russian physiologist known for his work on classical conditioning, demonstrating how organisms learn through association.
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