Question

3) Jessica is holding her cat in her lap and listening to the cat's purr. Cats generally purr

somewhere between 27 and 44 Hz. This is
a.) near the low end of frequencies that can be detected by humans
b.) near the high end of frequencies that can be detected by humans
c.) in the middle of the range that can be detected by humans
d.) is mostly undetectable by humans because it is lower than our auditory threshold
1 pe

Answer 1

a.) near the low end of frequencies that can be detected by humans.

Explanation:

Humans can hear frequencies in the range of 20 Hz to 20,000 Hz, so the frequency range of a cat's purr is near the low end of this range.