Is the gas service line entering the building above grade?

The correct answer is true, indicating that the gas service line is entering the building above grade. In building construction and design, the term "above grade" refers to any part of the structure that is above the ground level. Gas service lines, which provide natural gas to a building, are typically installed above ground for safety and accessibility reasons.

Having the gas service line enter above grade allows for easier maintenance and inspections, as well as reduced risk of damage from flooding or ground disturbances. If the line were installed below ground, it could be subject to issues like corrosion, leakage, or interference from nearby landscaping or construction. Building codes and safety standards often mandate that gas lines be installed in such a way to ensure they are protected and accessible.

The other options that suggest it is false, partially above grade, or not specified do not align with standard practices for gas service line installation. These options overlook the importance of safety and code compliance associated with gas line installations, which typically require them to be placed above grade for optimal performance and safety.