In the US, individuals can legally drink once they turn 21. We would like to estimate the effect of minimum drinking age laws on mortality using the given date 115 110 105 100 101.34 Death rate from all causes (per 100,000) 95 93.68 90 85 80 19 20 21 22 23 Age Calculate the regression discontinuity (RD) estimate based on the given figure and explain what this RD estimate means.Which of the following is an example of a natural experiment? 0 Hurricane 0 All these anawers are correct 0 Drought 0 Unanticipated economic events This is not conducted in a laboratory but rather in a natural setting, but still has some control over variables. With this method the researcher is more able to generalize to 'real-world' settings. O Observational Study Natural Experiment Laboratory Experiment Field Experiment Case Study Correlational Study Survey Secondary Data Analysis