American Gothic fiction is elucidated as the sub-genre belonging to Gothic fiction that laid emphasis on portraying supernatural elements to reflect the conflict between reason and irrationality along with the theme of guilt and obsessive passion.
As per the question, the characteristics of American Gothic fiction that are reflected in 'The Adventure of the Mysterious Picture' would include 'elements of supernatural' that helped in creating the intended atmosphere of suspense and terror that elicits the horrifying effect. 'An appeal to emotion' helps in the audience to have a haunting experience and convincing them to elicit desired response while 'ominous tone' adds flavor to the mood of thrill and threat. Therefore, <u>options A, C, and E</u> are correct.
