It is very important for scientists to replicate each other experiment because this will help to determine if important scientific results are repeatable. The correct option is A. Scientific results presented by a scientist should be reproducible anywhere in the world, without this, the results can not be accepted as theory.
The scenario that would
cause a sound to stop being produced is when a molecule moves through its
normal position to the opposite side of its normal position. The answer is
letter A. This is also known as destructive interference.
