Answer:Down
Explanation:He decided to climb <u>down</u> the hill because it was getting dark.
Dramatic Irony is irony that is inherent in speeches or in a situation of drama and is understood by the audience but not grasped by the characters in the play.
The answer is A, a word within a word.
It means that they are not essential( needed) because they rarely show anything that we have no knowledge about and that we can't solve them easily.