Final answer:
The correct word to describe the family's very simple and basic furniture due to selling most of their belongings is 'spartan'.
Step-by-step explanation:
The furniture in the house was very spartan and basic, as the family had to sell most of their belongings to afford the cross-country move. The term spartan implies a style that is simple, uncluttered, and utilitarian, often lacking in luxury or elaborate design. This reflects the family's need to prioritize necessities over comfort or aesthetics due to their financial constraints. The descriptions of the rooms from the provided texts depict various settings where the furniture and decorations either contribute to a functional and basic habitat or emanate a sense of austerity and minimalism, such as the description of the 'dream of a kitchen' that is new and complete yet simple in its purpose.