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Final answer:Analloyis a mixture of two or more metals or a metal and another element. A Ni-B alloy would be represented by a diagram depicting a regular arrangement of atoms where both Nickel and Boron atoms are randomly distributed.Explanation:The question asks which diagram best depicts an alloy of Nickel (Ni) andBoron (B). Unfortunately, without the actual diagrams, it's impossible to give a definitive answer. However, an alloy is a mixture of two or more metals, or a metal and another element. In the case of a Ni-B alloy, one could expect a diagram representing a regular arrangement of atoms where both Nickel and Boron atoms are randomly distributed.It's also important to mention that the list provided (phosphorus, zinc, copper, calcium, and others) seems irrelevant to the question. Thus, they do not help us determine the correct diagram.Learn more about Alloy here:brainly.com/question/31389764#SPJ11...