Which animal tricked to eat the forbidden fruit?

A snake, from Adam and Eve if that is what you mean

a snake or other wise known as a serpent.

Explanation:

Appositive is noun or noun phrase in which retitles, renames and helps describe the noun that is adjacent to it in the sentence. The appositive is like a more clear illustration or wants to illuminate the said subject in the statement. 
1.          The appositive word in the sentence is the author. Which describes and renames Gary Jackson in the sentence 
2.           It renames Charles Dickens.