Which statement best distinguishes confined spaces from general hazardous environments in the context of re-entry control?

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Confined spaces are defined by two features that drive how you manage entry: limited means of entry or exit, and unfavorable ventilation. Those conditions mean hazardous atmospheres can develop or persist, and it can be hard to rescue someone quickly if something goes wrong. That combination is what makes re-entry control notably different from general hazardous environments, so the statement that highlights restricted access and poor ventilation with potential for hazardous atmospheres is the best match.

General environments can have hazards too, but they don’t inherently have restricted entry/exit or the same ventilation challenges that create and trap hazardous atmospheres inside a space. Well-ventilated spaces aren’t necessarily confined spaces, and not all general environments require the strict, permit-based entry controls and standby rescue planning used for confined spaces.