Final answer:
The maximum ranking of a tornado on the EF-scale is EF5, indicating extreme damage with wind speeds exceeding 200 mph. So, the correct option is (b) EF5.
Step-by-step explanation:
The Enhanced Fujita (EF) scale categorizes tornadoes based on their estimated wind speeds and resultant damage. The scale ranges from EF0 to EF5, with EF5 denoting the most severe tornadoes. An EF5 tornado indicates wind speeds surpassing 200 mph, capable of devastatingly destructive forces that can level well-built homes and significantly damage high-rise buildings. Tornadoes at this level exhibit a nearly complete destruction of weak structures and can even lift sturdy structures from their foundations.
The EF scale assesses damage caused by tornadoes rather than directly measuring wind speeds, utilizing a detailed survey of affected areas to assign a rating. EF5 tornadoes, rare but incredibly powerful, cause catastrophic damage, leaving only debris where structures once stood. The destructive capabilities of EF5 tornadoes pose extreme threats to lives and property, warranting the highest level of precautionary measures.
Tornadoes of this magnitude are exceptionally rare, but their impact is indelible, leaving widespread devastation in their wake. The EF5 rating serves as a reminder of nature's immense power and the imperative need for preparedness and safety measures in tornado-prone regions. Understanding the potential destructiveness of EF5 tornadoes underscores the importance of heeding warnings and taking proactive steps to mitigate risks posed by these extreme weather events.
So, the correct option is (b) EF5.