When may you use the right-hand hard shoulder?

Your answer is correct.

In Germany, the right-hand hard shoulder (the solid line area on the right side of the motorway or road) can be used for stopping and parking (such as in emergencies) and for driving slow-moving vehicles when permitted. However, it is never allowed to use the hard shoulder to overtake other vehicles.

The hard shoulder is primarily a safety zone for emergencies or slow vehicles that cannot keep up with the regular traffic flow. Using it for overtaking is prohibited to avoid accidents and maintain clear pathways for emergency services if needed.

So, by choosing "For stopping and parking" and "For driving a slow-moving vehicle," you identified the correct permissible uses.