FORENSIC SCIENCE HELP QUICK WILL GIVE BRAINLIEST During an arson investigation, you collect evidence near the scene of the fire. Which of the following things you collected is an example of a substrate control sample?

Burnt wood flooring near the scene of the fire
Unharmed glass found on floor of the building that was not impacted by the fire
Melted glass near the scene of the fire
Unburnt wood flooring near the scene of the fire