Answer:
Main topic.
Step-by-step explanation:
The box labeled "14" is the main topic that is generated by the main idea. The main topic is what the paragraph will be about. For instance, you should bear in mind that a main topic could be summarized with a single word or phrase (my wide bedroom). On the other hand, the main idea, as it name indicates, is the most general idea that the writer want to express. For example: I enjoy spending time in my bedroom (because it is wide).