Final answer:
The correct answer is c. confidence interval, true relative risk.
Step-by-step explanation:
The correct answer is c. confidence interval, true relative risk. In statistics, a confidence interval is a range of values that is likely to contain the true value of a population parameter. In this case, the population parameter is the relative risk. When resampling the population multiple times, it is expected that the relative risk (RR) will fall within the confidence interval 95 out of 100 times.