Which substance woult heat up the most during a sunny day, and why At because it needs the most amount of energy to raise its temperature
Seawater because it needs the least amount of energy to raise its temperature
Sand on the shore because has a relatively low specific heat
Fresh water because has high specifie heat

The correct answer is C. Sand on the shore because it has a relatively low specific heat.

Explanation

Specific heat capacity is a physical quantity that establishes the amount of heat that a substance requires to raise its temperature by one unit. For example, sand has a heat capacity of 830 (J / Kg C °), which means that sand does not require much temperature to increase its temperature, while other substances such as air or seawater have a  higher specific heat capacity. According to the above, the substance that can be heated the most during a sunny day is sand because it has a lower specific heat capacity than air, seawater, and freshwater.