Answer:
Simultaneous
Explanation:
The simultaneous line up is the line up in which a person witness s based on relative judgment. In this, the person compares the photographs and the lineup person. On this basis, the witness makes the judgment. It is the phenomena in which witness identify the innocent people. But it decreases the false identification of innocent people.
Thus here in the above context, the researcher has been used simultaneous lineup for identification of the criminal. This is in a result of much more likely to identify the innocent people.