In some parts of the country, geothermal systems can be used to heat homes. This involves a closed loop of water-filled pipes. The pipes go deep under the home in the ground. Which transfer occurs when a geothermal system heats a home

With the geothermal system, heat moves out of the ground towards pipes filled with water.

Explanation:

The geothermal system is very efficient in promoting the heating of not only houses but also whole cities. This type of system uses the heat that naturally exists inside the earth. Thus, to implement this system, deep holes are drilled into the ground, where pipes filled with water are installed. The thermal energy of the soil will be transferred to this water, which will guide a hot vapor to the surface.

a. i. only is correct.