A theme is the message the playwright is trying to communicate to the audience. Themes are usually topics that should be analyzed by the audience in order to reflect about the message behind the play, and on their own reality.
A plot are the events and actions that happen in a drama. It could be a synonym of the story itself, since the plot refers to the sequence of events.
The setting is the time and place in which the drama is set. It is usually found at the beginning of the play, and it gives information about the context of the story, and prepares the reader for the action.
Characters are the people or creatures who are part of the drama. They are the ones that either perform or are affected by the actions. It is through their dialogues that the playwright explores the themes in the play.
There is no passage and answer choices, so it is impossible to answer this question. I apologise.
The word <em>wishing </em>is used as a participle in this case. Although gerunds and participles look the same, they are used in different senses - gerunds generally denote nouns, whereas participles have more of an adverbial meaning.
