<span>I am not sure but, my guess is Götz</span>
An adverbial phrase<span> is two or more words that act as an </span>adverb<span>. It can modify a verb, </span>adverb<span>, or adjective and can tell “how”, “where”, “why”, or “when.”
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I haven't read the book in two yes but I think it's B
You should start with listing the different ways you want to test them. Then each paragraph should talk about each different method and the results. Hope this helps.