Projection used for air navigation:

• A. Mercator
• B. Transverse Mercator
• C. Polyconic
• D. Lambert Conformal Projection

Answer: (D)

For air navigation, keeping shapes accurate locally so bearings and course lines remain reliable on the chart is essential. The Lambert conformal projection does this by being conformal, meaning it preserves angles at every point. This makes small course segments drawn on the chart reflect true directions on the ground, which is crucial for plotting and following flight routes. It also uses standard parallels to minimize distortion over the region of interest, so distances along typical air routes stay reasonably accurate. That balance of angle preservation and controlled distortion is why this projection is preferred for aeronautical charts. Other projections either distort distances at higher latitudes (Mercator), are intended for narrow zones along a single meridian (Transverse Mercator), or are older and less suited for broad aviation use (Polyconic).