What can be a challenge when dealing with insidious issues?

Insidious issues are often characterized by their gradual onset and subtle nature, which makes them particularly challenging to identify and address. The correct answer highlights that these issues may go unnoticed for a long time, escalating and causing more significant problems before they are recognized. This delayed detection can result in serious damage or complications, as individuals or organizations may not take action until the ramifications of the issue are substantial.

In contrast, the other options describe characteristics that do not accurately reflect insidious issues. Issues that are easy to identify and tackle do not present the same challenges, as they can be addressed promptly. Options suggesting that they attract immediate attention or resolve on their own do not align with the typical behavior of insidious problems, which tend to require careful monitoring and intervention to manage effectively.