Answer:
The organizational structure used in this passage is Cause and effect.
Step-by-step explanation:
The first line of the passage explains the fact of Heatstroke and the causes of it. Then in the second part of the passage, the effect of heatstroke and possible victims. So as to eliminate this threat a solution was also provided. Which may seem logical. But this is a cause and effect as, the solution was derived for a cause. Hence this is a cause and effect sentence structure.