Pseudo is a word root that means "false." Which is the best definition of the word pseudonym in the sentence below?

Many famous writers use pseudonyms to protect their true identities.

fictional names
family names
scientific names
symbolic names

Excerpt from jane eyre charlotte bronte 2 i was glad of it: i never liked long walks, especially on chilly afternoons: dreadful to me was the coming home in the raw twilight, with nipped fingers and toes, and a heart saddened by the chidings of bessie, the nurse, and humbled by the consciousness of my physical inferiority to eliza, john, and georgiana reed.