Answer:
D. Logan carried the suitcase out to the car.​ Nearby, Regina waited patiently.
Explanation:
Transitions help the reader to progress from one idea to the next. They prevent sudden mental leaps between sentences.
Nearby is a transitional word of location/place. It helps to link two ideas:
Logan carried the suitcase out to the car.​ Regina waited patiently.
Thanks to the transition word 'nearby', we understand that she waited for him to transfer the luggage to the vehicle.