What is generally the role of a farm tractor?

Farm tractors are specialized vehicles designed primarily for agricultural purposes. Their main role is to draw implements for agricultural work, such as plows, harrows, and seeders, which are essential for preparing and managing land for crop production. The design of farm tractors allows them to exert significant power and traction, enabling them to pull heavy agricultural implements through various terrains.

The other roles listed, while they may occasionally relate to tractors, are not their primary function. For instance, using tractors as general-purpose vehicles lacks the specificity that defines their primary agricultural role. Similarly, transporting livestock, while it can occur, is typically done by different types of vehicles that are better equipped for that task. Hauling recreational vehicles also falls outside the typical farming application of tractors, as they are not optimized for that kind of transport. Thus, the correct answer highlights the primary and most significant function of a farm tractor in agriculture.