Why is it that we can write outside of bounds in C?

Question

I recently finished reading about virtual memory and I have a question about how malloc works within the Virtual address space and Physical Memory.

For example (cod

Answer 1

"Why is this allowed to happen?" (write outside of bounds)

C does not require the additional CPU instructions that would typically be needed to prevent this out-of-range access.

That is the speed of C - it trusts the programmer, giving the coder all the rope needed to perform the task - including enough rope to hang oneself.