Answer: Gusty winds made flames spread rapidly.
Explanation:
From the information given, we are informed that the second circle is labeled "what were the causes"?. The detail that belongs in the causes area of the web will be "Gusty winds made flames spread rapidly".
It should be noted that option C and D that is, "Many people lost their businesses" and "people were scared and fled their homes" are both effects and not causes.
Therefore, the correct option is B.
