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Answer:
Plausibility.
Explanation:
Biological plausibility may be defined as the proposal of the causal association. This shows the relationship between the outcome and the putatiive case.
Here, the amount of calcium has been related with the improved bone health. The result or the outcome has been related with the with the amount of calcium taken every day. This shows the putative principle because it explain the cause and effect relation.
Thus, the answer is plausibility.