Which word would best fit a description of a person's reluctance to speak about their private life?

The chosen answer, "reticent," accurately encapsulates the sense of reluctance or unwillingness to share personal information or speak openly about one's private life. This word specifically conveys a reserved nature, suggesting that the individual prefers to keep their thoughts and feelings to themselves rather than divulging them to others.

In contrast, the other terms do not convey the same meaning. "Artisans" refers to skilled craftspeople, which bears no relation to the reluctance to discuss personal matters. "Paucity" denotes a scarcity or lack of something, and while it might imply limited information or sharing, it does not directly address the reluctance to speak. "Dismal," on the other hand, describes a gloomy or depressing state, which does not pertain to the context of personal communication and openness.

Overall, "reticent" is the most precise and relevant choice for describing someone who is hesitant to talk about their private life.