The best response to a coworker that wants you to sign for a waste that you did not witness is to refuse to sign for it.
This is a count of all the narcotics drug transactions that are done in a facility.
The reason why you should refuse this is the fact that it may end up as lying. This is due to the fact that it goes against the ethics of the job. This is given that you did not witness it.
Read more on ethics here:
https://brainly.com/question/13969108