Final answer:
An aircraft with a longer wing span will have less induced drag and greater stability, but this does not affect the lift assuming optimal flight conditions.
Step-by-step explanation:
An aircraft with a longer wing span will typically experience less induced drag, which is the part of total drag created by the generation of lift. Contrary to parasite drag, which increases with the size of the aircraft, induced drag decreases with longer wingspans because it spreads the lift out over a larger area, therefore reducing the lift-induced downwash and vortices which are the primary sources of this type of drag.
Concerning stability, longer wingspans contribute to greater angular stability around the aircraft's vertical axis (yaw stability). This is because the greater wing span increases the moment of inertia, making it more resistant to undesired rotational motion.
However, the notion of lift is independent of the wingspan once the aircraft is at its optimal conditions for flight, as lift is primarily related to the wing area, airspeed, air density, and the shape of the wing. Therefore, assuming optimal design and airspeed, an aircraft with a longer wing span would not necessarily have less lift.