Final answer:
To test the claim that water's polarity leads to a high specific heat, the student should perform research to see if other polar molecules have high specific heats (Option A). Comparing the specific heats of various polar molecules can reveal if there's a trend that supports the hypothesis.
Step-by-step explanation:
To test the student's claim that water's polarity is the reason it has a high specific heat, a suitable method would be 'Perform research to see if other polar molecules have high specific heat.' which corresponds to option A. By researching other polar molecules, the student can determine if there is a correlation between molecular polarity and specific heat capacities.
This comparison could potentially validate the hypothesis if other polar molecules also demonstrate high specific heats similar to water. It is important to note that the hydrogen bonding among water molecules, a consequence of its polarity, contributes significantly to its high specific heat capacity.
This makes water resistant to temperature changes and explains why it is used by warm-blooded animals to disperse heat and maintain even temperature. Option B is not a direct test of the claim, as it simply measures water's specific heat. Option C and Option D involve changing water's chemical composition and would not provide clear evidence for the claim.