Final answer:
The 'P' in the FURPS acronym stands for Performance requirements, which pertain to the software's response times, throughput, and resource usage.
Step-by-step explanation:
The P in the FURPS acronym stands for Performance requirements. The FURPS model is a classification used in software development to categorize various quality attributes of a software system. It stands for Functionality, Usability, Reliability, Performance, and Supportability. When discussing Performance requirements, we are referring to factors such as response times, throughput, and resource usage of the software system. Performance is critical for a good user experience and for ensuring that the system can handle the load expected of it in production.