Respuesta :
Answer: D. 3 kilometers
Step-by-step explanation:
Here, the given formula, that shows the distance of storm,
[tex]d=\frac{t}{3}[/tex]
Where, t is is the time, in seconds, between the flash and the thunderclap,
Here, t = 9 seconds,
Thus, the distance of the storm ,
[tex]d=\frac{9}{3}=3\text{ km}[/tex]
Hence, the storm is 3 km away if 9 seconds elapse between the lightning and the thunderclap.