Final answer:
Noises in the 28Hz frequency typically induce discomfort and irritation because these infrasound frequencies can be felt as uneasy vibrations rather than heard as sound. The correct answer is option b).
Step-by-step explanation:
Noises in the 28Hz frequency generally fall into the category of infrasound, which are below the normal hearing range of humans (20 to 20,000 Hz) but can sometimes be felt as vibrations. As such, at the frequency of 28Hz, the typical response from a human would be (b) Discomfort and irritation, as these low-frequency vibrations.
It can create a sensation of uneasiness or discomfort rather than being clearly heard as sound. It's important to note that normal hearing includes frequencies from 20 Hz to 20,000 Hz, and the ear is most sensitive to frequencies between 2000 to 5000 Hz. This enhanced sensitivity is why sounds in that range may seem louder and clearer.
Different animals have different hearing ranges, and responses to various frequencies can vary widely. For example, dogs can hear up to 30,000 Hz, while elephants can perceive sounds below 20 Hz.