A young woman was found dead on the side of the road. Two witnesses said they saw and red cadillac hit her and drive off earlier that evening. Forensic investigators collected glass samples found on the victims body. a few hours later, police found what they thought to be the car in question: a red cadillac with a broken headlamp. they collected glass samples from the headlight.

Forensic Experts would use all BUT ONE analysis technique to help match the glass samples. That would be

a) density
b) shatter pattern
c) refractive index
d. microscopic examinat