Passages that include indicator words such as "so," "because," and "since" may not always be arguments because these words can also be used to indicate cause-effect relationships, explanation, or simple statements of fact. For example, the sentence "It was raining, so I brought an umbrella" shows a cause-effect relationship rather than presenting an argument. Similarly, the sentence "Because it was a holiday, the office was closed" simply provides an explanation without making an argument. In order for a passage with indicator words to be considered an argument, it must include a claim or assertion that is supported by reasons or evidence. The presence of indicator words alone does not necessarily indicate the presence of an argument. It is important to analyze the overall structure and content of the passage to determine if it is presenting an argument or simply providing information or explanation.