Question

1. The first thing to do in planning a speech is to plan the conclusion.

Answer 1

I am not entirely sure whether these are the correct answers, but I will try and hopefully it helps you. :)
1. It is false that you plan the conclusion first - you need to get the general idea, and then create the entire outline. 
2. It is true that a thesis statement may be controversial - if what you are writing about is a controversial topic, the thesis statement may as well be controversial.
3. It is true that you shouldn't introduce a joke in your speech unless it has some point that you want to prove - you don't want to include anything in your speech that doesn't have anything to do with what you are trying to achieve.
4. It is true that the idea is central, and that you organize your essay around it.
5. It is false that failure to listen comes only from outer distractions - it may come from the inner ones as well. You may be tired or stressed, and so in no condition to listen to someone carefully.