The lowest part of the clear opening of a window shall be a minimum of how many inches above the finished floor?

The correct answer is 24 inches, as this measurement is established to ensure safety and meet building codes that protect occupants from falls. The requirement that the lowest part of the clear opening of a window be at least 24 inches above the finished floor aims to prevent accidental falls, especially in homes where children might be present. This height is considered a standard practice in residential construction, balancing natural light and ventilation with safety concerns.

While there may be variations in codes across different jurisdictions or for specific types of buildings, the 24 inches height is generally accepted as a minimum standard to promote safety. In addition, this height provides practical benefits for window functionality, allowing for effective use without compromising the structural integrity of the window installation.