The word from Al Gore's speech that gives it the most formal style among the answer choices is "affliction," as stated in option A and explained below.
When we write or speak in a way that is formal, we tend to use words that are not commonly used in everyday conversations. That is the case with the word "affliction," especially in the context presented in the question.
In Al Gore's speech, the word "affliction" seems to be synonymous with "disease" or "sickness." These two words are, however, much more commonly used in everyday conversations, whereas "affliction" is rare.
Therefore, we can say "affliction" is the word that gives the speech the most formal style among the answer choices. Option A is the correct answer.
Learn more about formal writing here:
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