According to the passage, the main disadvantage of person-on-the-street interviews is that they_______. A. are not based on a representative sampling B. are used only on television C. are
According to the passage, the main disadvantage of person-on-the-street interviews is that they_______.
A. are not based on a representative sampling
B. are used only on television
C. are not carefully worded
D. reflect political opinions