The correct answer is:
O allusion
An allusion is a reference to something well-known that can be from literature, history, religion, mythology, or pop culture. It assumes that the audience or reader will understand the reference without it being explicitly explained. Allusions are commonly used in writing to enhance meaning, create connections, or add depth to the text. For example, if someone says, "He's a real Romeo with the ladies," it's an allusion to Shakespeare's character Romeo, implying that the person is romantic or passionate.
Therefore, an allusion is a reference to a statement, a person, a place, thing, or an event that assumes everyone will know what is being talked about.