What kind of speech is a valedictorian's speech?

Giving your valedictorian or graduation speech at the end of your time at high school is both an exciting and sometimes daunting task, and it is one that most speech givers relish. Its aim is to provide a persuasive, moving, and ultimately uplifting speech. You want to give your listeners a fond farewell to high school, and also inspire them to go out and achieve greatness. That's quite a task for a speech giver in just one address. You can do it, though, as long as you plan and prepare your address before you get up to speak.

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Select the word from the list that best fits the definitionstates the the universe is expanding