Final answer:
The correct MLA in-text citation format for information from a newspaper article is to include the author's last name and page number, e.g., (Parker 2a).
Step-by-step explanation:
When you need to insert an in-text citation for information from a newspaper article following the MLA format, you follow the conventions that include the author's last name and the specific page number where the information can be found. Among the options provided, the correct MLA format is: The Jane Austen Museum will display never-before-seen letters in a coming exhibition (Parker 2a). This implies that the full citation of the newspaper article by an author named Parker can be found on the 'Works Cited' page, which includes more detailed publication information.