Final answer:
The correct answer is b. Multitasking, means performing multiple tasks simultaneously, such as making a phone call while waiting for a meeting to start.
Step-by-step explanation:
If a person attempts to make a phone call while they are waiting for a meeting to begin, they are engaged in multitasking. This term refers to the action of doing multiple tasks at the same time. For example, if someone is on the phone while waiting for a meeting, they are dividing their attention between the call and the anticipation of the meeting. Multitasking can be contrasted with sequential tasking, where tasks are performed one after another in sequence. Combining tasks might seem like a similar concept to multitasking, but it typically refers to integrating tasks in such a way that they are done together as one seamless activity. Lastly, cleaving tasks is not a commonly used term in this context.