Final answer:
The CPU's cache memory is a high-speed form of RAM that provides data to the CPU faster than the main RAM, and the correct answer is a) Cache.
Step-by-step explanation:
The CPU's memory that is referred to in the question is the cache memory. This is a high-speed memory type that is smaller than the computer's main RAM but is much faster. The cache is used to store data that the CPU is likely to use frequently. When the CPU needs certain data, it first checks if that data is in the cache; if so, it can get it much faster than if it had to fetch it from the main RAM. The correct answer to the question is a) Cache.