Which length represents total interior walls across the specified rooms?

The correct choice reflects the total interior walls across the specified rooms, measured in linear feet (LF). In the context of measuring walls, linear feet is the standard unit used to provide a straightforward calculation of the length of walls without considering height or area.

This option signifies the total length of all interior walls combined, making it essential for understanding the dimensions and layout of the spaces. Knowing the total length in linear feet is critical for estimating materials needed for construction or renovations, such as drywall, paint, and other finishes.

The other options represent different measurements: some are in feet and inches, which may indicate lengths but are not standard for total wall calculations, while one option measures square footage (SF), which pertains to area rather than linear measurement. For estimating the total lengths of walls, only the linear foot measurement provides the necessary information.