Answer :
Final answer:
The safe residual pressure on an oxygen cylinder is considered to be 200 PSI. This higher pressure level is maintained for safety reasons to ensure there is always an adequate oxygen supply. So, the correct option is c) 200 PSI
Explanation:
The safe residual pressure reading on an oxygen cylinder is considered to be 200 PSI. This is a higher pressure compared to others for safety reasons.
Oxygen cylinders are critical for providing supplemental oxygen to individuals in need, particularly those with respiratory illnesses.
It's essential to ensure that there is adequate pressure remaining in the cylinder to provide the needed supply of oxygen. Letting the pressure fall below this can risk an inadequate supply for the user.
So, the correct option is c) 200 PSI
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