What does a 'nom de plume' indicate about a writer?

A 'nom de plume' is a French term that translates to 'pen name' in English. It refers to a pseudonym that an author chooses to use instead of their real name when publishing their works. This practice can serve various purposes, such as allowing a writer to maintain privacy, separate different genres of writing, or create a distinct identity for their literary persona. Therefore, the choice that indicates this concept directly aligns with the definition, making it clear that a writer using a 'nom de plume' is indeed utilizing a pen name for their work.