A preview can be defined as a view to show in advance what is to be shown in the presentation. It is a statement that is said directly to the audience about the main points of the speech.
<u>In the given case, the speaker is previewing his main ideas of the speech by stating the points that he is going to speak. He gave a brief description of his speech that his speech is going to be based on the reasons for recycling, cost-saving benefits, etc</u>.
The answer to this question is true if this is a true or false question. Southeast Asian countries are rich in natural resources. They are very dependent on agriculture since their location is near the equator. Thus, their weather falls in humid tropics.