In operating systems, $$busy waiting$$ is defined as $($Chapter $2)$

Question $10$ options:

the situation where if one process is using a shared variable or file, the other processes will be excluded from doing the same thing

the situation where two or more processes are reading or writing some shared data and the final result depends on who runs precisely when

the part of a program where the shared memory is accessed

the situation where a variable is continuously tested until some value appears