The correct answer is B. An author's choice of words
Explanation:
In writing and even in public speaking, the word "diction" refers to the style used by the author or speaker to convey the main message in a text or speech, this style is usually linked to the words the author uses in a text or speech and that makes him/ her unique and different to the words selected by other authors to convey similar messages. Additionally, diction also allows the author to communicate his or her attitude toward the main issue of a text or tone and set the mood or atmosphere of it. Considering this, it can be concluded the statement that best describes the term diction is "An author's choice of words" because diction refers to the way authors select words to convey and message and that make their style unique.
