Final answer:
The correct punctuation for the song title 'WHITE CHRISTMAS' in the provided example is quotation marks, making option B) the correct answer. Titles of shorter works like songs are placed in quotation marks, while longer works are usually italicized.
Step-by-step explanation:
The appropriate punctuation for underlining a song title like WHITE CHRISTMAS is the use of quotation marks. When referencing titles in English, the general guideline is that shorter works, such as songs, articles, and poems, should be enclosed in quotation marks. Therefore, for the example provided, Irving Berlin wrote "WHITE CHRISTMAS" and many other popular songs, the correct punctuation would be option B) quotation marks. Longer works, like books or movies, are typically italicized to differentiate them from shorter pieces.
A signal phrase often precedes quotations, introducing the source material and making the text flow more smoothly. When using quotations, it's crucial to adjust them for clarity and accuracy without altering their meaning. Regarding punctuation with quotations, periods and commas should be placed inside the quotation marks, while colons, semicolons, question marks, and exclamation points follow different rules based on whether they are part of the quotation or not.
In conclusion, the correct answer to the question posed is option B) quotation marks.