Outlines show the general structure of a text including the main idea (principal point) and the details that explain this idea (supporting idea) by organizing these from more general to more specific. Due to this, creating an outline before writing a text helps the author to better organize the elements of a text. Moreover, an outline shows if the supporting ideas and other details such as examples are connected to the main idea and support it. This is possible by analyzing if each of the supporting ideas helps the author explain the main point or main idea. According to this, the statement is true.
The correct answer is C, because it has a correct infinitive 'to act' and a gerund 'dreaming'. A and B don't have them, and in D, 'saving' is a participle, not a gerund.
