providing an interesting fact, asking a thoughtful question, sharing a related quotation, telling a related joke or personal story
The point of a hook is to get the audience interested in the presentation. An interesting fact may entice the audience into wanting to know more about how this occurred or how they can make it happen too. A thoughtful question is also a great way because the audience may want to know the answer. It's important that this is not a question that could be answered yes or no, or that would be an answer the audience can easily google. Sharing a related quotation can also peak the audience's interest along with a related joke or personal story. Do NOT mention the reasons that support the claim, this information is for the body of the presentation not the hook. Also, do NOT talk about the presentation in the presentation.