Final answer:
The title of a short story should be punctuated as "Thank You, M'am" with quotation marks, capitalized major words, and a comma after 'Thank You' if the title includes a natural pause.
Step-by-step explanation:
The correct way to punctuate the title of a short story is: "Thank You, M'am". When punctuating titles of shorter works such as articles, short stories, and poems, they should be enclosed in quotation marks. Capitalize the first word, the last word, and all major words in between, including nouns, pronouns, verbs, adverbs, adjectives, and some conjunctions. Also, always include a comma if there's a pause within the title as you would do in regular writing.