In The Riddle of the Rosetta Stone, James Cross Giblin makes his ideas clear to readers best through his

confidence and style.
courage and success.
tone and viewpoint.
format and objectives.

In The Riddle of the Rosetta Stone, James Cross Giblin makes his ideas clear to readers best through his(c) tone and viewpoint.

Explanation:

The Rosetta Stone is a type of stone that was discovered by the soldiers of the Napoleon army.The text on the stone was written in three languages and it is a mean to understand the  Egyptian hieroglyphs.

The Rosetta Stone is kept in the British museum.The book The Riddle of the Rosetta Stone, James Cross Giblin talks about the Rosetta Stone and the process of deciphering Egyptian hieroglyphs.

Since the book talks about the riddle of a  Rosetta Stone ,so inorder to express his ideas the narrator can make use of his tone and use his viewpoint to express his ideas

Tone and view point

Explanation:

I took the quiz and got a 100.

original oratory is a competitive event in the national speech and debate association, stoa usa, national catholic forensic league, and other high school forensic competitions in which competitors deliver an original speech on a subject of their choosing, though the speech must be factual.racial discrimination refers to discrimination against individuals on the basis of their race. policies of racial segregation may formalize it, but it is also often exerted without being legalized and also it means facing injustice.