Final answer:
Michael is most likely looking for igniters such as matches, gasoline, and kerosene.
Step-by-step explanation:
Michael, as an investigator at the scene of a possible arson, is most likely looking for igniters that could have been used to start the fire.
Some common examples of igniters that Michael might be searching for include matches, gasoline, and kerosene.
Although glass bottles can be used as containers for accelerants, they are not typically considered igniters.