The correct option is C All of the above
In note making, the writer records the essence of the information. It helps us to understand and clarify thinking. Note making saves a lot of time by going through the notes made. One can get a glimpse of a lot of information from a short note. Thus, headings are very important as they show the title of the note at a glance. Subheadings are also important as they subdivide the main topic. Notes are convinient to review if they are made in a point system. Hence, A, B and C are all very important in note making. Just choosing one of these options renders the answer correct. Only D is the correct answer.