A physical therapist observes that 4 out of 5 elderly patients who perform a specific balance exercise daily for a month report fewer falls. Based on this observation, the therapist concludes that this exercise is likely effective at reducing fall risk in the elderly population. Which of the following best describes the therapist's conclusion?
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A
A deductive certainty, as it follows logically from the premises.
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B
A weak inference, because the sample size is too small to draw any conclusions.
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C
An inductive generalization, suggesting a probable link but not guaranteeing it for all individuals.
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D
An invalid argument, as it fails to account for other potential factors like medication changes.