Daniella Mailed a Package to Her Brother Three Days Ago

Multiple Choice

Daniella mailed a package to her brother three days ago.She wants to see if it has arrived yet.What technology will enable her to track her package?

A) The code on the package that is scanned at each leg of the journey.
B) The computer that is finding the fastest route for the driver.
C) The GPS that is avoiding traffic and hazardous conditions.
D) The phone that her brother will use when he receives the package.