Final answer:
A process can be single threaded, multithreaded, or both.
Step-by-step explanation:
A process can be single threaded, multithreaded, or both.
A single threaded process refers to a process that has a single sequence of instructions. It means that the process is executed one instruction at a time until it completes.
A multithreaded process, on the other hand, refers to a process that has multiple threads of execution. Each thread can run concurrently, allowing multiple instructions to be executed simultaneously.
Therefore, the correct answer to the question is c) Both (a) and (b) because a process can be single threaded or multithreaded depending on the implementation.