Correct Answer: AWhen a User Mode process crashes and creates a core dump file, it contains comprehensive information that can be used to diagnose the cause of the crash. This includes the program counter, which indicates the address of the next instruction to be executed; the stack pointer, which allows inspection of the call stack and local variables; memory management information that helps identify the state and usage of memory at the time of the crash; and other processor and operating system flags that provide additional context. Therefore, all the given pieces of information i, ii, iii, and iv are available in the core dump and may be used to identify the root cause of the crash.