Intrinsic motivation is a motivation "from inside", with internal, rather than external awards.
Three of the things you mentioned have an external reward: the 500 Dollar prize( first option), the credit (third) and the hope of winning a blue ribbon (the last).
Only the second one has an intrinsic motivation: that you will be happy about performing this song (feeling proud of yourself, etc).
Answer:
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Answer:
Do not talk at your audience; pretend you are talking with your audience. Rehearse just as you plan to present and, if possible, in the same location that you will deliver your speech. Prepare for interruptions and questions. Make sure to leave room for a Q&A session at the end of your speech.