Which of the following statement is correct? Select one: a. Base register holds the size of a process. b. Limit register holds the size of a process. c. Base and limit registers can be loaded by the standard load instructions in the instruction set. d. Any attempt by a user program to access memory at an address higher than the base register value results in a trap to the operating system.

A limit register is a form of registers used in memory management background that contains logical addresses. It is utilized to determines the size of the psychical memory range for a process. It can only be loaded only by the operating system, through a unique specific instruction.

Hence, in this case, the right answer is option B

Option A is not correct because the Base register specifies where the page table begins in memory

Option C is not correct because Base and limit registers can be only be loaded through the operating system

Option D is also not correct.