Which of the following conditions should lead to not using a ladder?

Choosing not to use a ladder in any of the listed conditions is essential for ensuring personal safety and reducing the risk of accidents. A defective ladder, one that has visible damage such as cracks or weakened joints, compromises the structural integrity and stability needed for safe use. Likewise, if a ladder is set up improperly—such as being placed on an uneven surface or angled incorrectly—this can lead to a loss of balance and potential falls. Additionally, if a ladder is broken, the risk is further heightened, as it could collapse or fail at any moment, leading to severe injuries.

Therefore, recognizing any of these conditions—defective, improperly set up, or broken—should serve as a clear indication to forgo using the ladder. Prioritizing safety by avoiding a ladder in any of these scenarios is vital in preventing accidents in the workplace or at home.