Weight (W) is the force exerted by a gravitational field on a mass (m), usually expressed as W = mg, where g is the acceleration due to gravity. This gravitational force contributes to the net force acting on the object. In free fall, the net force acting on the object is its weight. The phrasing of option A is imprecise, as weight is a component of the net force in general, but in the context of forces acting on an object, it is the most relevant option compared to others that describe different concepts.