When used in a speech introduction, telling a story, asking a question, making a startling statement, and arousing curiosity are all methods of
previewing the body of the speech.
enhancing the speaker's credibility.
establishing goodwill with the audience.
revealing the topic of the speech.
gaining the attention of the audience.

gaining the attention of the audience.

Explanation:

The introduction of the speech gives an overview of the content of the whole speech. The most important function of the introduction is to gain the attention of the audience. Also, it helps in developing an interest in their mind. The main purpose of giving the speech is also stated in the introductory part of the speech. It also helps in developing a smooth and sound relationship between the speaker and the audience.

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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