High frequency sound, you can see that the waves are together and the wavelength is

a. farther, longer
b. close, longer
c. close, short
d. farther, short

The higher frequency sound, you can see that the waves are close together and the wavelength is short

Explanation:

This is because of the fact, the wavelength and the waves are inversely proportional to the frequency of sound. That's why, greater the frequency the more closer the waves and also the greater the frequency shorter the wavelength. Usually the speed of the sound may vary from medium to medium, but the frequency always remains constant as it is just like oscillation having frequency of original source. The frequency depends upon four factor like length, diameter, tension as  well as density.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.