__________ of drivers age 16-20 who admitted to driving after taking drugs felt that they were "not high enough to cause a crash."55%57%56%58%

To determine the percentage of drivers aged 16-20 who admitted to driving after taking drugs and believed they were "not high enough to cause a crash," we need to analyze the options presented. The options are:

1. 55%
2. 57%
3. 56%
4. 58%

Since the question does not provide any additional context or specifics on which percentage is correct, the answer would typically depend on the source of the data or survey results. Based on this lineup, any of the percentages could theoretically represent the right statistic depending on the survey's findings.

If you have a specific context or source for these statistics, please share it to allow for a more precise response.