we walked in in search of some direction to find a line of at least ten , all with poison in hand waiting to make their purchase . assuming we 'd have better luck outside we returned to the parking lot and katie suggested we find the visitor info center we read about.a voice from behind perked up ... " i ' m from the visitor info center . what do you need ?

Question: Why did we hear a voice from behind us ?
Answer: None of the above choices .Because we purchased poison .Because we returned to the parking lot .Because Katie mentioned the visitor info center .