Answer: Statement C. A writing mode is closely related to the writer’s purpose is true.
Explanation: When an author chooses to follow a specific writing mode, this decision is closely linked to his/her purpose. Therefore,<u> if the purpose of a writer is to entertain his/her audience, he/she will choose the narrative mode, </u>which is used to tell a story that includes fictional or real people. In contrast,<u> if a writer wants to report facts or to inform his/her audience about a particular event, he/she will choose the expository mode</u>. The same happens with other writing modes. In that way, a writer's purpose tends to influence his/her choice on modes of writing.