Which mindset is NOT mentioned as a key to success in an investigation?

The correct choice indicates that having a clear agenda is not emphasized as a crucial mindset for success in an investigation. In the context of investigative work, the focus is often on adaptability and responsiveness to the evolving nature of cases. Investigators are encouraged to be thorough in their approach, ensuring that all details are considered, which aids in uncovering the truth.

Being flexible is vital because investigations can take unexpected turns, and the ability to shift approaches as new evidence arises is essential. Lastly, perseverance reflects the tenacity and determination needed to overcome challenges during the investigative process. Therefore, while having an agenda can be beneficial in organizing thoughts, it is not highlighted as a key factor in successful investigations, which rely more on adaptability and thoroughness.