What is one significant reason why terrorist attacks are often successful?

One significant reason why terrorist attacks are often successful is due to detailed planning. Successful attacks typically involve extensive preparation, which may include gathering intelligence on the target, selecting the timing and methods of the attack carefully, coordinating logistics, and creating escape routes. This thoroughness enhances their ability to execute the attack with precision, maximizing impact and casualties while minimizing their chances of capture or failure.

In contrast, options that suggest cursory observation, bad intelligence, or minimal training do not align with the reality of how most successful terrorist operations are conducted. Successful attacks are usually characterized by their meticulousness rather than haste or poor execution. Detailed planning helps mitigate risks and address potential obstacles, which is crucial in carrying out complex operations.