Final answer:
The sterile team member should open the first flap of a sterile package.
Step-by-step explanation:
When opening an envelope-folded, sterile package for presentation to a sterile team member or for placement on the sterile field, the sterile team member should open the first flap. This is because the sterile team member is responsible for maintaining a sterile environment and ensuring that the items remain sterile. Opening the package yourself can risk contaminating the contents.