5. n. an introductory scene or speech at the beginning of a
play before the main action begins

An introductory scene or speech at the beginning of a play before the main action begins.

Explanation:

Introductory scene is basically the opening scene that describes about the main action or characters in the play. The opening scene shows us how the story is going. It gives us a gist about the play. The authors concentrate more on the opening scene that induces the interest of the reader.

Introductory speech is all about introducing oneself to the public or crowd. Introduction helps the audience to understand what is going on. So it is better to give an introduction before beginning of with something.

answer; ///(a) and (c) newspaper article and instruction manual; //so the answer is (e)