What is an advantage of using a supplied-air respirator (SAR) compared to using self-contained breathing apparatus (SCBA) in a hazardous environment? Question 17Answer a. An air supply hose provides less risk of entanglement than SCBA cylinders. b. Using SARs requires the user to carry more weight than when using SCBA cylinders. c. Continuous air supply through an air hose enables longer work periods. d. SARs are more resistant to long periods of extreme heat