The absolute threshold for hearing is arbitrarily defined as zero:
Correct answer: B. Decibels
- A. Wavelength
- B. Decibels
- C. Phonemes
- D. Hertz
Explanation
Hearing intensity is measured in decibels, and zero decibels is used as the conventional reference point for the average human hearing threshold. Hertz measures frequency, while wavelength and phonemes refer to different properties.
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