17. Acceptable noise level for human ear A.> 85 db B.= 85 db C.< 85 db D.None of the above
Option C Solution: Because people can't hear all frequencies, or pitches of sound, A-weighted decibels (dBA) can be used to describe sound based on what human ears can actually hear. Sounds at or below 70 dBA are generally considered safe. Any sound at or above 85 dBA is more likely to damage your hearing over time.
