Answer :
Final answer:
The most effective type of ventilation for removing atmospheric contaminants is C. positive-pressure ventilation removes atmospheric contaminants more effectively than negative-pressure ventilation.
Explanation:
When choosing the type of ventilation to use, it is important to remember that positive-pressure ventilation removes atmospheric contaminants more effectively than negative-pressure ventilation. This is because positive pressure is when the air pressure is greater than the atmospheric pressure, helping to push the contaminated air out.
Negative pressure, on the other hand, is lower than the atmospheric pressure and can draw outside air in, possibly making it less effective in removing contaminants depending on the specific circumstances. Therefore, the correct answer is C. positive-pressure ventilation removes atmospheric contaminants more effectively than negative-pressure ventilation.
