Passage Summary: Ticks stay on their hosts until they have finished eating. For deer ticks living on white-footed mice, this always happens in the afternoon. Because these mice spend their entire day hiding in underground nests, we can determine exactly where those ticks end up when they finish their meal.

Reasoning: Ticks only drop off their hosts once they are full; deer ticks on white-footed mice specifically drop off between noon and sunset; white-footed mice stay in underground nests during all daylight hours.

Analysis: When we treat these premises as absolute truths, a clear picture emerges regarding the ticks' location. Since the ticks only drop off during a window when the mice are strictly underground, the ticks are essentially 'trapped' into dropping off in the nests. This is a classic LSAT deduction where you simply follow the timeline and the location to their only possible intersection. The correct answer will likely just state this geographical coincidence without needing any outside information.