Experts say that noise-induced hearing loss can happen from hearing a very loud sound (120 decibels or higher) once, or from hearing a sound at 85 decibels or higher for an extended period of time, best supports the author's assertion that listening to loud music can create a hearing loss.
As in the above statement, the author asserts its point by quoting from an expert. Also, the above statement states the specified details about how it can cause hearing loss if hearing a sound at 120 decibels or 85 decibels. Thus, such information gives precise details about the cause and thus makes clear as compared to the other sentences. The others sentences assert an experience and not the cause and effect.