This question is based on General Literary Principles
A careful choice of words dictated by a particular mood or an event refers to
Answer Details
A careful choice of words dictated by a particular mood or an event refers to tone. Tone is the attitude or approach that an author takes toward the subject matter, character or audience in their writing. It is conveyed through the author's choice of words, imagery, and other literary devices, and can be formal or informal, serious or humorous, or any other emotion or mood that the author wishes to convey to the reader. A skilled writer can use tone to create a particular atmosphere or feeling, and to shape the reader's response to the text. In this way, tone is a powerful tool in the writer's arsenal, and can be used to great effect to convey a wide range of emotions and ideas to the reader.