President Abraham Lincolns diction during the address can best be described as Informal. The effect of this is that is helps to disarm the audience and keep his tone light to put them as ease. Hence, the correct answer is D.
In literature, diction simply refers to the choice of words and how those words are spoken. There are three main types of diction. They are:
What diction is used in a speech or text is important because it affects the way the audience or readers perceive and receive the message.
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