Question

what is the meaning of the foreign expression in bold?
some historians believe that well - respected author daniel defoe also published works under the nom de plume captain charles johnson.
a familiar form of a proper name
a pen name used by an author to hide her or his identity
a stage name
a name or title that identifies someone or something

Explanation:

"Nom de plume" is a French term specifically referring to a false name an author uses instead of their real name, often to conceal their identity. The example of Daniel Defoe publishing under Captain Charles Johnson aligns with this definition, as it is an author using an alternate name to hide their real identity.

Answer:

a pen name used by an author to hide her or his identity