<span>The wavelength of the associated sound will increase. This will be noticed by the sound having a lower tone. As the sound passes through the solid object, not only will it sound lower in tone, it will sound softer, evidenced by if a person closes a door to a room and listens to a sound played from inside.</span>
The answer will be D because the reaction is what's first(A) and then it is the product that comes out.
If one does not do so, the cut can lead to being infected with various pathogens and other Bacteria, possibly worsening the Minor injury. Thus taking additional medication and further required time to heal.
Iron rusts when in contact with water.
I would say A but then again im not too sure so hope that makes it easier to somehow