Final answer:
The best hypothesis for a calorimetry science problem is that more energy is needed to heat 100 g of water than the same amount of sand/soil, due to water's high specific heat capacity.
Step-by-step explanation:
The correct hypothesis related to calorimetry in science is option B: More energy is needed to heat 100 g of water than to heat 100 g of sand/soil. This hypothesis can be tested and is based on the specific heat capacity of substances, which measures the amount of heat required to change the temperature of a certain mass of the substance by a given amount. The specific heat of water is relatively high, which means it takes more energy to raise the temperature of water than it does for many other substances. This is why the temperature of large bodies of water, like lakes, remains fairly constant throughout the day, despite fluctuations in air temperature.