The answer is the last one
Science subject demonstrate observation
Social welfare department observation
<span>The correct answer is the source of segregation.
Source of segregation of a complex acoustic signal into separate auditory events. Some sounds which come from different sources, they can be localized by the human brain to where the sound is coming from.
Based on loud of the sound it will be easy for a person to detect where the sound is coming from.</span>
Even after seemingly complete endoscopic resection recurrence of neoplasia is frequent and independent of additional thermal therapy.
The best way of doing it without potentially causing harm to yourself, would be "wafting".