Question

the image shows the relationship between bike helmet use and bicycle deaths.according to the graph, during which year did people practice the riskiest behavior in terms of helmet use?1994199820062014

Explanation:

Step1: 理解风险行为

不戴头盔骑行属于风险行为，对应图表中蓝色柱子（No Helmet Used）。

Step2: 比较蓝色柱子高度

观察图表中不同年份蓝色柱子（代表不戴头盔死亡人数），1994年蓝色柱子最高。

Answer:

1994