Good modifies phone and is a predicate adjective, so a.
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Where are the statements, can you upload a picture of the statement so that I can answer your question
Context clues are the details in a sentence that helps you figure out the meaning of a word. Hope this helps!
The method is called deductive reasoning. In it, the thinker starts from the most general claim, which is obvious in itself. Then he asks more questions, each of which is more specific and particular. Thereby he finally reaches the answer. The answer which is found with this method has the least chance of being false. Aristotle is the philosopher who invented the term.