Final answer:
Hearing certification standards for drivers are based on specific criteria, and hearing tests are usually displayed on an audiogram with a normal hearing threshold of 0 dB. It's not possible to determine which drivers' tests meet the hearing certification standards without knowing the specific dB thresholds required for certification. The details of the hearing test results given in the question do not provide enough information to establish their conformity with certification standards.
Step-by-step explanation:
Hearing certification standards for drivers' tests require a person's hearing abilities to meet certain criteria. Hearing tests are typically conducted across a range of frequencies, usually from 250 to 8000 Hz, and results are illustrated on an audiogram. The hearing threshold is the softest sound that can be heard and is measured in decibels (dB) relative to the normal threshold. Normally, a hearing threshold is represented as 0 dB across all frequencies. Hearing loss might be depicted on an audiogram as a deviation from this baseline, with higher dB levels indicating a greater loss of hearing.
Let's examine the options provided:
- The whisper test results indicate the ability to hear whispers at specified distances, but without understanding the acceptable dB levels for certification, it's unclear if these meet the standards.
- The audiogram results show dB levels for various frequencies in both the left and right ears. According to standard hearing tests, hearing threshold levels up to 25 dB are generally considered within normal limits. The option with the audiogram showing thresholds at left 35/500 Hz, 50/1000 Hz, 40/3000 Hz; right 35/500 Hz, 35/1000 Hz, 60/3000 Hz suggests a mild to moderate hearing loss and may not meet hearing certification standards if the standard requires normal hearing or mild hearing loss only.
It is crucial to refer to specific certification standards which dictate the acceptable hearing levels for certification. Typically, these standards would define the maximum threshold of hearing in decibels at various frequencies that are considered acceptable for driving certification. Since the whisper test results do not provide a quantifiable measure of hearing loss, and the audiogram results provided vary in dB level, it is not possible to determine which tests meet the hearing certification standards without the context of those standards.