Hot water, pan to hold water, stopwatch and thermometer are the pieces of equipment which would be useful for investigating the claim.
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What is Temperature?</h3>
This is the degree of hotness or coldness of a substance and it is measured with the use of the thermometer.
Since temperature is involved, the thermometer and heat source are important thereby making option D the most appropriate choice.
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Carbon dating is a process that estimates the age of anything. However, there are flaws that exist. It may not be a precise number, but it does gives a good estimation.