When biological samples of unknown origins are discovered at a crime scene, what should investigators do?a. assume no pathogens are present and treat the samples accordinglyb. allow only trained hazardous material teams to handle the evidencec. package the samples in plastic bagsd. assume pathogens are present and treat the samples accordingly

assume pathogens are present and treat the samples accordingly

Explanation:

When investigators are unable to conclusively ascertain the source of a biological sample found at a crime scene, the correct thing to do is to treat it as if pathogens are present in it and handle it according to set rules on how to handle pathogens.

This is done to ensure that if a pathogen is indeed present, it would not cause a health emergency by infecting those who come in contact with the samples at the scene.

thats how its supposed to be