Final answer:
The Idaho Bureau of Laboratories likely utilizes PCR, DNA sequencing, and microscopic examination as comprehensive approaches to definitively identify an organism.
So, the correct answer is 4) All of the above.
Step-by-step explanation:
The Idaho Bureau of Laboratories would use several methods to definitively identify an organism. These methods could include Polymerase Chain Reaction (PCR), which amplifies a specific DNA sequence for analysis; DNA sequencing, which would read the sequence of the organism's DNA to identify it; and microscopic examination, which allows observation of the organism's morphology. In many cases, all of these methods could be part of a comprehensive approach to organism identification, as each provides different types of information that can confirm an identification.
So, the correct answer is 4) All of the above.