Respuesta :
The correct answer is C. To demonstrate that the ideas aren't just the author's opinion but are factually convincing
Explanation:
In texts, it is common writers support ideas using evidence; for example, they quote articles, books or scientific studies. This shows the ideas of the author have been proven by others, and therefore the text is based on facts rather than only opinions. For example, if you want to convince the audience exercise is good for health, you need to demonstrate this through evidence such as medical research. Thus, writers provide evidence to demonstrate that the ideas aren't just the author's opinion but are factually convincing.