Answer:
Planning is required.
Step-by-step explanation:
The feature that is not of a lecture but of a meeting is the requirement of planning.
Planning can be defined as a process of thinking of such schemes or projects that will help to achieve the goals. To achieve goals, the first step that is required is to plan.
Planning is a feature of a meeting, as a meeting is held with a purpose to reach a goal. Whereas, lecture does not require planning. Lecture is held with a purpose to inculcate lesson or teaching.
Therefore, the correct answer is option C.