Question 1511 Deck General

The correct answer is D) 21%. The Occupational Safety and Health Administration (OSHA) requires that the minimum oxygen level in a confined space be at least 19.5% for safe entry and work. However, the U.S. Coast Guard's regulations for confined space entry are more stringent, requiring an oxygen level of 21% for a confined space to be considered safe. This higher oxygen level ensures a sufficient supply of oxygen to support normal breathing and avoid the risk of asphyxiation. The other options (A, B, and C) are incorrect because they do not meet the Coast Guard's minimum oxygen requirement for confined space entry and work.