The correct answer is B. The atmosphere of a story
Step-by-step explanation:
In literary, the mood is one of the most important elements because this stablishes the general atmosphere of the events described as well as the emotions or feelings conveyed to it. For example in a gothic story, the mood is related to mystery and fear rather than related to happiness or peace. Additionally, the mood is constructed through other literary elements that include the setting, tone of the author and language. According to this, the phrase that best defines the mood in literature is "The atmosphere of a story".