Why do we need to use mutexes in a shared execution environment like a threaded process? Because the threads share the entire process's memory Because the threads do not share memory with each other and this way they can. Because if the threads share an object (variable/data), they need to serialize access to that object. Because the shared memory model requires that use a mutex to execute. Why do we need to use mutexes in a shared execution environment like a threaded process? Because the threads share the entire process's memory Because the threads do not share memory with each other and this way they can. Because if the threads share an object (variable/data), they need to serialize access to that object. Because the shared memory model requires that use a mutex to execute.