Final answer:
XP stands for Extreme Programming, a software development methodology, and XDP stands for eXtensible Data Protocol, a protocol for internet data communication.
Step-by-step explanation:
The abbreviations XP and XDP can have different meanings depending on the context, but in this case, the correct answers are Extreme Programming and eXtensible Data Protocol respectively, which makes option 1 the correct pair. Extreme Programming (XP) is an agile software development methodology intended to improve software quality and responsiveness to changing customer requirements. eXtensible Data Protocol (XDP), on the other hand, stands for a protocol used to communicate data on the internet that is designed to be flexible and extensible.