Forensic investigators find a widespread dispersal pattern of elongated bloodstains on a wall with a void at the point of origin. the bloodstains are less than 1 mm in diameter. which weapon most likely caused the blood-spatter pattern?

Forensic investigators observe the crime scene and gather any physical evidence that is found and document the analysis done on them. Sketches and the photos taken at the crime scene are also the part of the evidence they collect. Since here the bloodstains found by the Forensic investigators are less than 1mm diameter, they can deduce the weapon used for crime would be shotgun as it has a narrow barrel.