Stimulus
Millions of female bats rear their pups in Bracken Cave. Although the mothers all leave the cave nightly, on their return each mother is almost always swiftly reunited with her own pup. Since the bats’ calls are their only means of finding one another, and a bat pup cannot distinguish the call clear that each mother bat can recognize the call of her pup.
What this question is testing
Your task
Describe how the argument proceeds — the technique it uses to reach its conclusion.
Common trap
Answers that describe a method the argument doesn't actually use.
Winning move
Track the role each statement plays, then match that to the choice describing the same moves.
Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.