Question

which item in the equipment drawing is the regulator? press the hotspot that describes the oxygen regulator, and press the answer box to save your selection.

Explanation:

To identify the oxygen regulator, we recall that on an oxygen cylinder setup, the regulator is typically the component with gauges (pressure gauges) attached to the cylinder valve. Looking at the drawing, the green cylinder (oxygen cylinder) has a component with gauges (the blue - white hotspot on the green cylinder's top with the gauges) which is the regulator. The red cylinder's hotspot is likely the cylinder itself or another component, the hose - related hotspots are for tubing, and the green cylinder's top - with - gauges is the regulator.

Answer:

The hotspot (blue - white circle) on the top of the green cylinder (with the pressure gauges)