The correct answer is A. Causal order
Explanation:
Outlining is a stage of prewriting that involves organizing the main ideas, sub-ideas, and other details that will be included in the text. Additionally, the content is organized according to the general order of the text, in the case of a cause and effect text, this focuses on showing the effects of one event or the cause of it. For example, a text can describe the causes or effects of the Cold War. In this context, a text that shows a cause and effect relationship needs to have a causal order in the outline, which means including the main event and then listing the causes and effects that act as main ideas of this outline.