The thesis is usually at the beginning of the essay. It states what you will talk about in the essay. It's kind of like a preview.
So all you have to do is write in the second column what you know. The third is for your conclusion, or your answer
The correct answer for this question would be C) Will have been throwing or the third option because the definition of verb is doing something and progressive is in progress, so like in motion, so that's why its C) because the person will have been is the progressive and throwing is the verb.