Final answer:
The purpose of the orienting material in the speech introduction is to engage the audience, provide context and details about the topic, and establish the speaker's credibility.
Step-by-step explanation:
The purpose of the orienting material in the speech introduction is to engage the audience, provide context and details about the topic, and establish the speaker's credibility. The orienting material hooks the audience's attention and sets the tone for the speech. It also helps the audience understand why they should care about the topic.