Answer:
The factors that affect the temperature of seawater are depth, geographic area, and currents.
The temperature of seawater can vary depending on the depth of the water, with deeper water generally being colder than shallower water. This is because sunlight can only penetrate to a certain depth, and deeper water is not exposed to the warming effects of the sun.
The temperature of seawater can also vary depending on the geographic area, with water in different regions of the world having different average temperatures. For example, water in equatorial regions tends to be warmer than water in polar regions.
Finally, ocean currents can also affect the temperature of seawater by redistributing heat around the globe. Warm water currents such as the Gulf Stream can bring warmer water to colder regions, while cold water currents such as the Labrador Current can bring colder water to warmer regions.
Therefore, the correct answer is B. Depth, geographic area, and currents affect the temperature of seawater.