jenny\nto include this signature in a formal letter, it should be revised to contain the writer’s\n○ full…

jenny\nto include this signature in a formal letter, it should be revised to contain the writer’s\n○ full first name and middle name.\n○ nickname and last name.\n○ title and full first name.\n○ full first name and last name.
Answer
Brief Explanations:
In formal letter - writing, a proper signature typically includes the writer's full first name and last name for a professional and clear identification. Using a nickname is too informal, and while a title can be added in some cases, just the full first and last name is a standard requirement for a signature in a formal letter.
Answer:
D. full first name and last name.