Construct an explanation for why convection in orbit around Earthfor example, aboard the International Space Station --would be impossible .

The characteristics of the atmospheric pressure allow to find the reasons for the heat transfer processes.

Thermal conduction is the process by which bodies exchange thermal energy (heat), these processes can be divided:

In space at the height of the space station 400 km, than the area called the thermostat or ionosphere, in it the atmospheric pressure is very low.   There are ionized gases, nitrogen, oxygen and helium, but at very low pressure.

Because there are not enough gases around the space station, the convection processes that are due to the movement of a mass of gas do not exist.

At the height of the space station the most important mechanism of heat transfer is radiation.

In conclusion, the characteristics of atmospheric pressure allow us to find the reasons for the heat transfer processes.

Learn more about the thermal conduction process here:

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the answer would be c