To determine the acceptable temperature and relative humidity setting during warmer months, we need to compare each given setting with the acceptable temperature range for these months. The acceptable temperature range is from 60 degrees Fahrenheit to 80 degrees Fahrenheit. Let's evaluate each setting individually:
1. Setting 1) 40 degrees Fahrenheit, 75 percent relative humidity
- The temperature here is 40 degrees Fahrenheit.
- This is below the acceptable range of 60 to 80 degrees Fahrenheit.
- So, Setting 1 is not acceptable.
2. Setting 2) 90 degrees Fahrenheit, 15 percent relative humidity
- The temperature here is 90 degrees Fahrenheit.
- This exceeds the acceptable range of 60 to 80 degrees Fahrenheit.
- So, Setting 2 is not acceptable.
3. Setting 3) 75 degrees Fahrenheit, 40 percent relative humidity
- The temperature here is 75 degrees Fahrenheit.
- This falls within the acceptable range of 60 to 80 degrees Fahrenheit.
- So, Setting 3 is acceptable.
4. Setting 4) 15 degrees Fahrenheit, 90 percent relative humidity
- The temperature here is 15 degrees Fahrenheit.
- This is far below the acceptable range of 60 to 80 degrees Fahrenheit.
- So, Setting 4 is not acceptable.
After evaluating all the settings, we find that the only acceptable setting during warmer months is:
- Setting 3) 75 degrees Fahrenheit, 40 percent relative humidity
Therefore, the answer is 3.
