Final answer:
The correct answer is B) 40-50%. Ambient room humidity should be maintained between 40% and 50% for a comfortable and healthy environment.
Step-by-step explanation:
The correct answer is B) 40-50%.
Ambient room humidity refers to the amount of moisture in the air. Most vendors recommend maintaining a humidity level between 40% and 50% in indoor spaces. This range helps create a comfortable and healthy environment.
Humidity can be measured using a moisture or humidity gauge, which is available at most hardware stores. If the humidity is too low, a vaporizer or humidifier can be used to increase it. If the humidity is too high, opening windows or adjusting the air conditioner can help decrease it.