What property of water…..?
Water stabilizes land temperatures because of two factors. The first factor is known as a “heat sink” property. Water absorbs heat faster than other materials. The second factor, complimented by the first, is “circulation”. Water tends to release its heat more slowly than other materials because it is constantly moving in currents measured in trillions of tons in weight, and an equally large amount in volume. Therefore, land mass temperatures at the ocean’s edge tend to be stabilized by the ocean’s influence. So, I would have to go with “heat capacity” as the correct answer, as it is the prime factor in temperature stabilization.