Final answer:
Discourse style and rhetorical devices like parallelism, repetition, and figurative language are fundamental in crafting an impactful speech.
Step-by-step explanation:
Discourse style and rhetorical devices are crucial elements in delivering a powerful speech. A speaker's discourse style includes the language they use and the way they organize their thoughts to engage the audience effectively. It encompasses the use of clear language that may vary in complexity depending on the audience and context, as well as the ability to adapt the tone to the purpose of the speech.
Rhetorical devices, such as parallelism, repetition, and utilization of figurative language like similes and metaphors, are techniques that enhance the persuasiveness and memorability of a message. Using metaphors can compare unlike things in an impactful way, for example, describing a joyous event as 'a wave of happiness'. Repetition can emphasize key points and make them more memorable, as in Martin Luther King Jr.'s famous 'I have a dream' speech. Parallelism gives a sense of rhythm and balance, enhancing the overall coherence of the speech.
These rhetorical strategies are not only about beautifying the language but are about effectively conveying the speaker's message to the audience. By using rhetorical devices, the speaker ensures that the message is not only heard but also felt and remembered by the audience. Hence, selecting the right combination of discourse style and rhetorical devices can significantly influence the success of a speech in communicating its intended message.