Step 1: Understanding the Concept:
This idiom hinges on the multiple meanings of a common English word. In this phrase, the word "letters" does not refer to postal mail or correspondence envelopes. Instead, it uses an older, classical definition of "letters" which stands for literature, learning, and scholarly knowledge (as seen in the academic field name Arts and Letters).
Step 2: Detailed Explanation:
Let's break down the idiom based on its historical usage:
Historically, a "man of letters" referred to an educated, literate person who was deeply immersed in the world of books, academic reading, essay writing, and literary criticism. Today, it describes an author, scholar, poet, or intellectual who possesses exceptional skill and wisdom in literature and the written word.
Let's evaluate the options:
- Option (A) is a literal trap. A postman delivers physical letters, but is not referred to by this expression.
- Option (B) perfectly defines the phrase as someone who is deeply knowledgeable and skilled in literature or creative writing.
- Option (C) and Option (D) describe professions that do not align with the scholarly, intellectual focus of this specific idiom.
Step 3: Final Answer:
The correct meaning of the idiom is a person skilled in literature or writing, corresponding to option (B).