Which type of house is defined by having complex floor plans and multiple stairwells?

The definition of a house characterized by complex floor plans and multiple stairwells aligns well with what is commonly referred to as a multi-level house. These homes typically feature several levels of living space that may include split levels or varying floor heights, which contribute to more intricate designs and layouts. Multi-level houses can incorporate multiple staircases connecting different levels, allowing for a more diverse use of space and creating distinct areas for living, dining, and recreation.

In contrast, one-story houses are designed without stairs, focusing on a single level, which inherently limits complexity in floor plans. Split-level houses, while they do involve changes in floor height and some stair navigation, tend to have a more simplistic design compared to the variety and complexity associated with multi-level houses. Two-story houses consist of two distinct stories, usually with a more straightforward staircase but do not inherently feature the complex arrangements that define multi-level homes. Thus, the characteristics of a multi-level house make it the correct choice here.