Final answer:
The statement that an unsafe act is the violation of accepted safety procedures causing accidents is true, as shown by a safety engineer's investigation into industrial accidents stemming from employees not following instructions.
Step-by-step explanation:
The statement is true: an unsafe act is indeed the violation of commonly accepted safe procedure which directly permits the occurrence of the accident event. In the context of industrial safety, this often refers to workers not adhering to established safety protocols or engaging in behaviors that are known to increase the risk of injury or accidents. A safety engineer is investigating industrial accidents caused by employees not following instructions, which is considered an unsafe act. By analyzing accident reports, she is trying to determine the proportion of accidents that can be attributed to such violations. The example underscores the role of safety compliance and the direct relationship between unsafe acts and accident occurrences.