Answer: Synchronization
Explanation:
In communication of messages between processes we have a mechanism called as the interprocess communication (IPC) using which it is required to achieve synchronization between the process. These synchronization helps to prevent collision of the processes for the shared resources. Examples can be of mechanism of producer consumer problem .
D. Because its not the only measurement which says in a. Its not B because waist measurement is also important. and its not C since D is the perfect method
