Answer: The word that best describes the style of a speech rather than its tone is formal.
Step-by-step explanation: The style of a speech, which makes reference to the way in which the message is delivered, is chosen according to the purpose of that speech and its audience. In contrast, the tone is the attitude conveyed in the writing or the emotion reflected in a speech. "Apologetic", "angry" and "dismissive" are all words that refer to the tone of a speech. In contrast, there are different speech styles and one of them is formal style, which consists in including formal words and expressions. For that reason, the word "formal" is the correct answer.