Final answer:
The title 'The Royal Tenenbaums' should be italicized when included in a sentence. Italicization is the standard for long works like movies or books, and titles should follow proper capitalization rules. Shorter works, such as articles, use quotation marks instead.
Step-by-step explanation:
The title The Royal Tenenbaums should be properly formatted when included in a sentence. For titles of long works such as books, movies, and television shows, the standard convention is to italicize the title.
Therefore, the correct answer to how the title should be formatted is: It should be italicized. It is also important to note that when italicizing the title, the first word should be capitalized while the subsequent words follow the standard capitalization rules. So, the correct italicization would be The Royal Tenenbaums.
Titles of shorter works, such as articles or essays, should be placed within quotation marks. This distinction is essential in correctly formatting your sentence according to the conventions of English writing. Remember that the punctuation such as a period should be placed after the italicized or quoted title.