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Direct answer
Which trench condition presents an immediate crushing or burial hazard is a TradeCert Prep study concept connected to Plumbing License Practice Test prep, not a copied official exam item. A trench cave-in can occur suddenly and bury or crush workers, which is why protective systems and competent-person inspections are critical. Always verify licensing, certification, and testing rules with the current official candidate bulletin, state manual, code book, or testing provider before relying on a detail for compliance.
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Read the answer once, then prove it by choosing an answer in a practice question before looking at the explanation. If the miss repeats, tag the domain as Safety and drill a smaller set before returning to mixed practice.
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Plumbing License Study Guide
Independent journeyman and master plumber license study guide for state-specific code review, drainage, venting, traps, water supply, fixture units, and trade math.
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