Question

loudness of noise is measured by
select one:
○ a. cfc meters.
○ b. mega - cycles.
○ c. linear meters.
○ d. decibels.

Explanation:

Decibels (dB) are the standard unit for measuring the loudness or intensity of sound. CFC meters are related to measuring chlorofluorocarbons, mega - cycles are a measure related to frequency in some contexts, and linear meters measure length.

Answer:

D. decibels