Question 4
Which property of water keeps body temperature from swinging up and down with the temperature of the surroundings?
The right answer is the one marked above.
Water's specific heat capacity is high, so it takes a great deal of heat to change its temperature. A body that is mostly water therefore does not heat up or cool down quickly when the surroundings do.
This is what makes water important in body temperature regulation — a different job from the insulating one the subcutaneous fat layer does.