What essential aspect should be ensured before lifting an object?

Ensuring compliance with angle specifications for safety before lifting an object is crucial to prevent accidents and injuries. When lifting heavy objects, the angle at which they are lifted can significantly influence both the load distribution and the stability of the object. Adhering to designated angle specifications helps maintain proper body mechanics, reduces the risk of strain on the lifter's body, and contributes to a safer lifting process overall.

Understanding the appropriate angles for lifting also relates to the principles of leverage and balance. When the lifting angle is optimized, the effort required to lift the object is minimized, and the risk of the object slipping or falling is reduced, thereby safeguarding both the individual lifting and the surrounding personnel.

The other options, while potentially relevant in a broader context of workplace safety and procedures, do not directly address the critical safety measures needed specifically during the physical act of lifting an object. Proper documentation, operator credentials, and management approval relate more to administrative controls rather than the immediate physical requirements for lifting safely.