What is the typical configuration of landing gear within an aircraft?

The correct choice highlights that aircraft typically use a configuration that includes both nose gear and main gear. This configuration is fundamental to ensuring stability and balance during various phases of flight, particularly during takeoff and landing.

Nose gear supports the front of the aircraft and aids in steering on the ground. It helps to manage direction while taxiing, taking off, and landing, ensuring that the aircraft remains controlled and predictable. Main gear, located under the wings or fuselage, supports the bulk of the aircraft's weight during landing and taxiing. The combination of both types of gear allows the aircraft to distribute its weight evenly and provides the necessary structural support to absorb the impact forces encountered during landings.

The other options do not accurately reflect standard aircraft design and functionality. For instance, using only main gear would compromise the aircraft's steering ability on the ground. Utilizing just nose gear would be inadequate for supporting the aircraft's weight. The statement that landing gear is not included in modern aircraft is misleading, as landing gear is a critical component across all types and models of aircraft, serving essential roles in safety and operation.