Final answer:
The best type of accommodation for the sisters who want to visit various places without repacking is a cruise ship because it provides a consistent living space while traveling to different destinations.
Step-by-step explanation:
The best choice of accommodation for two sisters who want to visit a variety of different cities or countries on a trip but do not want the hassle of packing and unpacking at each destination would be A) Cruise Ship. A cruise ship offers the convenience of having a single place to stay while traveling to multiple destinations. The sisters can have their room on the ship and would only need to unpack once, as the ship moves from one port to another. On the other hand, hostels, bed and breakfasts, and all-inclusive resorts typically require guests to pack and unpack as they move to different locations.