Answer :
The First In First Out (FIFO) replacement policy is based on the theory that the best page to remove is the one that has been in memory the longest.
What is FIFO Page replacement?
This is mostly used in operating systems.
It is an algorithm that programs the system to replace the oldest page when replacement needs to be done.
See the link below for more about FIFO Page replacement:
https://brainly.com/question/16016066