>Yazira: Take the left one.

Perspective hands you the package you indicate by gesture of hand, which is your left and her right. Without getting too much into the reeds thinking about perspective shifting relative to Perspective and whose stage right is whose stage left and what lefts are right and what rights are left, you take the one that you feel to be leftmost to you.

You are now in possession of the LEFTMOST PACKAGE. Perspective makes a nodding and limb-waving gesture that you easily parse as "open it, open it!"

>Yazira: Open LEFTMOST PACKAGE.