Question 209Safety & Environmental - 1st Asst/Chief

The correct answer is D) The speed with which it can be put into operation is around 45 seconds. A major advantage of using a positive pressure type self-contained breathing apparatus (SCBA) is its quick deployment time. The positive pressure design allows the user to quickly don the SCBA and have it operational within about 45 seconds. This is a critical feature, as it enables the user to rapidly respond to emergency situations and hazardous environments. The other answer choices are not directly related to the speed of deployment. Option A addresses the fit of the mask, option B discusses the equipment's weight and maneuverability, and option C refers to the operating time, which is a separate characteristic from the deployment speed.