Which of the following wing placements is classified as low-wing?

The classification of wing placements is based on their position relative to the fuselage of the aircraft. A low-wing configuration is characterized by wings that are mounted below the central line of the fuselage. This design can provide certain aerodynamic advantages, such as improved stability and better ground visibility for pilots during takeoff and landing.

Additionally, low-wing aircraft often benefit from enhanced lift at lower speeds and can allow for a more compact fuselage design. This positioning also helps in minimizing drag when flying, as the wings are more efficiently interacting with airflow.

In contrast, wings mounted above the fuselage are considered high-wing configurations, and those positioned at the center are termed mid-wing. The option regarding wing position being irrelevant does not apply to the specific classifications established in aeronautical design.