What is most likely the reason the author included the description of the spoon in the hot coffee cup?

Imagine a very hot mug of coffee with a

spoon in it resting on the countertop of a

kitchen. That cup of coffee has a

temperature very high temperature and

the surroundings (countertop, air in the

kitchen, etc.) have a temperature that is

much lower. The cup of coffee will

gradually cool down over time. At 80°C, you

wouldn't even think about drinking the

coffee; even the coffee mug will likely be

too hot to touch. Over time, both the

coffee mug and the coffee will cool down, reach a drinkable temperature and

eventually reach room temperature.

The coffee and the mug are

transferring heat to the

surroundings. This transfer of heat

occurs from the hot coffee and hot

mug to the surrounding air. The

fact that the coffee lowers its

temperature is a sign that the

average kinetic energy of its

particles is decreasing. The coffee

is losing energy. The mug is also

lowering its temperature; the

average kinetic energy of its

particles is also decreasing. The mug is also losing energy. The energy that is  

lost by the coffee and the mug is being transferred to the colder

surroundings. This transfer of energy from the coffee and the mug to the

surrounding air and countertop is heat.

Explanation:

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the answer is d. none of the above