Passage Summary: Ants use smelly chemical trails to find their way around, but those smells disappear completely when it gets hotter than 113 degrees Fahrenheit, which is common in the Sahara during the afternoon.

Reasoning: Most ants rely on pheromone trails to navigate between food and their nests, but these chemicals evaporate instantly in temperatures exceeding 45 degrees Celsius.

Analysis: We are looking for a statement that must follow from the intersection of ant biology and desert climate. If pheromones are the primary navigation tool and the Sahara heat destroys those pheromones, then Sahara ants face a major problem in the afternoon. You should look for an answer that suggests these ants either avoid foraging during the heat of the day or have evolved a non-chemical way to navigate. The facts suggest that a 'standard' pheromone trail simply won't function in that environment.