Which of the following would increase the loudness of a sound? increase tension increase wavelength increase amplitude

increase amplitude

Explanation:

Hi, a sound is perceived as louder when the amplitude increases.  

If the amplitude of a sound wave increases, it means that the wave carries more energy. The Energy carried by a sound wave is related to the intensity of the wave.

If the sound wave has more intensity, it means that the sound is more intense (loud).

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.