Final answer:
The statement about the rhetorical situation calling for a public response is true, involving the circumstances of communication such as author, audience, and purpose.
Step-by-step explanation:
The statement "The circumstance that calls for public response is known as the rhetorical situation" is true. A rhetorical situation encompasses the conditions or circumstances in which communication takes place, including the agents involved, such as the author and the audience, as well as the purpose, genre, context, means, and culture. Whenever someone communicates, they are participating in a rhetorical situation. The conditions dictate how one delivers a message, and those involved must choose the appropriate language and style to address the audience and accomplish their goals. This is evident from daily interactions on social media to academic writing, where understanding the rhetorical situation is fundamental for effective communication.