Choose the correctly edited sentence. original sentence: in human beings, the indentation between the nose and the upper lip is called the philtrum but don't nobody knows it's purpose or if it's real necessary. question 5 options: in human beings, the indentation between the nose and the upper lip is called the philtrum, but nobody knows its purpose or if it's really necessary. in human beings, the indentation between the nose and the upper lip is called the philtrum but nobody knows its purpose or if it's really necessary.