What the name of the article. or book?
I think a historian has to be curious to be successful. This is simply because if a historian does not have a drive to learn more information\, they will not try. However, if they keep the child-like mindset of always needing to know, they can go far with their discoveries and studies.
The correct answer of the given question above would be the last option. The author's choice of words affects the tone of the excerpt in a way that the words candor and legacy impart a complimentary tone. Candor means being open or honest. And these two words impart a flattering tone.