Answer:
D. a scalpel just used for surgery
Step-by-step explanation:
a. disposable means that you can just throw it away after, you don't use it again.
b. the suture material is sealed and has not been open or used before.
c. the scrubs have only been worn at the nurses desk which means that they have stayed there the entire time
d. a scalpel should always be sterilized even if it has not been used, but since it was just used for surgery, that probably means that it has blood and stuff on it, so it should DEFINITELY be sterilized and decontaminated.