Question

Passage:
In nineteenth-century Anglo-American jurisprudence, the traditional common law rule regarding trespassers was stark and unforgiving. Generally, landowners owed no affirmative duty of care to individuals who entered their property without permission, save for the narrow obligation to refrain from inflicting willful or wanton harm. This rigid legal doctrine prioritized the absolute sanctity of private property rights over personal injury claims, reflecting the laissez-faire economic philosophies that dominated early industrial society.

However, the rapid acceleration of the industrial revolution, particularly the unprecedented expansion of railroad networks, fundamentally challenged this paradigm. Railroad companies routinely constructed and maintained unsecured turntables—massive rotating platforms utilized to reverse the direction of heavy locomotives—in relatively accessible, unfenced areas. These industrial structures proved inherently fascinating, yet demonstrably lethal, to local children. The landmark 1873 case of *Sioux City & Pacific Railroad Co. v. Stout* served to permanently fracture the traditional trespasser rule. In this pivotal decision, the Supreme Court upheld a jury verdict in favor of a young child severely injured on an unlocked turntable. The Court reasoned that the railroad's explicit knowledge that children frequently played in the vicinity of the machinery imposed a duty of reasonable care on the corporation, completely superseding the child's technical status as a trespasser.

This groundbreaking ruling birthed what became colloquially known as the "turntable doctrine," which gradually evolved and broadened into the "attractive nuisance" doctrine. This doctrine stipulated that a property owner could be held legally liable for injuries sustained by trespassing children if the injury was directly caused by a hazardous, artificial condition on the land that was likely to attract minors who, because of their youth and inexperience, could not adequately appreciate the latent risk. Crucially, however, the doctrine initially required that the dangerous condition itself be the very thing that lured the child onto the property. If a child trespassed to pick wild berries and subsequently fell into an abandoned mine shaft, the doctrine would not apply.

Over time, courts increasingly found this strict "allurement" prerequisite unworkable and logically inconsistent. In many instances, a child might trespass for a completely unrelated reason and only subsequently encounter the lethal hazard. By the mid-twentieth century, the Restatement of Torts formalized a modern approach that entirely abandoned the strict allurement requirement. Under this revised legal framework, liability hinged instead on the sheer foreseeability of childish trespass and the unreasonableness of the danger, explicitly balancing the utility of maintaining the condition to the landowner against the financial and practical burden of eliminating the risk. Thus, the jurisprudential focus shifted away from the psychological inducement of the trespassing minor and toward a pragmatic cost-benefit analysis of hazard mitigation.

According to the passage, the initial iteration of the "turntable doctrine" stipulated which of the following as a strict prerequisite for landowner liability?