Final answer:
Operating aircraft can commonly produce noise levels in the range of 70-90 decibels.
Step-by-step explanation:
The correct answer is option 2) 70-90 decibels. Operating aircraft can commonly produce noise levels in this range. For reference, 50 dB is equivalent to the noise level inside a quiet home with no television or radio, while 100 dB is equivalent to the take-off of a jet plane.