Answer:
Option b. The statement that says that the audience for a written work refers to the reason an author communicates is true.
Step-by-step explanation:
An author can be defined as someone who uses different tools, such as writing, speech, visual elements or audio elements in order to communicate a message to an audience. The statement is true because every author that produces a written work does so in order to have an audience reading it and receiving his/her message. Writing is a form of communication, and the author needs an audience in order to communicate, as the audience needs authors that produce work that they can read.