^ Wrong... The correct answer should be <em>how to change the oil in your car </em>
Reasons to visit California and Why seat belts should be required are persuasive speeches because you are persuading your audience to visit California and make belts mandatory. Changing oil is informative because there's no opinion there or persuasion, just information.
Reasons to visit California on summer vacation and why seatbelts should be required both are trying to convince you of something. A speech at a retirement celebration is more of an entertainment thing so I think the best answer would be how to change the oil in your car because it is 'informing' you of something
